1 /* 2 * Interface handling (except master interface) 3 * 4 * Copyright 2002-2005, Instant802 Networks, Inc. 5 * Copyright 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> 7 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 #include <linux/slab.h> 14 #include <linux/kernel.h> 15 #include <linux/if_arp.h> 16 #include <linux/netdevice.h> 17 #include <linux/rtnetlink.h> 18 #include <net/mac80211.h> 19 #include <net/ieee80211_radiotap.h> 20 #include "ieee80211_i.h" 21 #include "sta_info.h" 22 #include "debugfs_netdev.h" 23 #include "mesh.h" 24 #include "led.h" 25 #include "driver-ops.h" 26 #include "wme.h" 27 #include "rate.h" 28 29 /** 30 * DOC: Interface list locking 31 * 32 * The interface list in each struct ieee80211_local is protected 33 * three-fold: 34 * 35 * (1) modifications may only be done under the RTNL 36 * (2) modifications and readers are protected against each other by 37 * the iflist_mtx. 38 * (3) modifications are done in an RCU manner so atomic readers 39 * can traverse the list in RCU-safe blocks. 40 * 41 * As a consequence, reads (traversals) of the list can be protected 42 * by either the RTNL, the iflist_mtx or RCU. 43 */ 44 45 46 static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) 47 { 48 int meshhdrlen; 49 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 50 51 meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0; 52 53 /* FIX: what would be proper limits for MTU? 54 * This interface uses 802.3 frames. */ 55 if (new_mtu < 256 || 56 new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { 57 return -EINVAL; 58 } 59 60 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 61 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); 62 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ 63 dev->mtu = new_mtu; 64 return 0; 65 } 66 67 static int ieee80211_change_mac(struct net_device *dev, void *addr) 68 { 69 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 70 struct sockaddr *sa = addr; 71 int ret; 72 73 if (ieee80211_sdata_running(sdata)) 74 return -EBUSY; 75 76 ret = eth_mac_addr(dev, sa); 77 78 if (ret == 0) 79 memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); 80 81 return ret; 82 } 83 84 static inline int identical_mac_addr_allowed(int type1, int type2) 85 { 86 return type1 == NL80211_IFTYPE_MONITOR || 87 type2 == NL80211_IFTYPE_MONITOR || 88 (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || 89 (type1 == NL80211_IFTYPE_WDS && 90 (type2 == NL80211_IFTYPE_WDS || 91 type2 == NL80211_IFTYPE_AP)) || 92 (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || 93 (type1 == NL80211_IFTYPE_AP_VLAN && 94 (type2 == NL80211_IFTYPE_AP || 95 type2 == NL80211_IFTYPE_AP_VLAN)); 96 } 97 98 static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, 99 enum nl80211_iftype iftype) 100 { 101 struct ieee80211_local *local = sdata->local; 102 struct ieee80211_sub_if_data *nsdata; 103 struct net_device *dev = sdata->dev; 104 105 ASSERT_RTNL(); 106 107 /* we hold the RTNL here so can safely walk the list */ 108 list_for_each_entry(nsdata, &local->interfaces, list) { 109 struct net_device *ndev = nsdata->dev; 110 111 if (ndev != dev && ieee80211_sdata_running(nsdata)) { 112 /* 113 * Allow only a single IBSS interface to be up at any 114 * time. This is restricted because beacon distribution 115 * cannot work properly if both are in the same IBSS. 116 * 117 * To remove this restriction we'd have to disallow them 118 * from setting the same SSID on different IBSS interfaces 119 * belonging to the same hardware. Then, however, we're 120 * faced with having to adopt two different TSF timers... 121 */ 122 if (iftype == NL80211_IFTYPE_ADHOC && 123 nsdata->vif.type == NL80211_IFTYPE_ADHOC) 124 return -EBUSY; 125 126 /* 127 * The remaining checks are only performed for interfaces 128 * with the same MAC address. 129 */ 130 if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) 131 continue; 132 133 /* 134 * check whether it may have the same address 135 */ 136 if (!identical_mac_addr_allowed(iftype, 137 nsdata->vif.type)) 138 return -ENOTUNIQ; 139 140 /* 141 * can only add VLANs to enabled APs 142 */ 143 if (iftype == NL80211_IFTYPE_AP_VLAN && 144 nsdata->vif.type == NL80211_IFTYPE_AP) 145 sdata->bss = &nsdata->u.ap; 146 } 147 } 148 149 return 0; 150 } 151 152 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 153 const int offset) 154 { 155 struct ieee80211_local *local = sdata->local; 156 u32 flags = sdata->u.mntr_flags; 157 158 #define ADJUST(_f, _s) do { \ 159 if (flags & MONITOR_FLAG_##_f) \ 160 local->fif_##_s += offset; \ 161 } while (0) 162 163 ADJUST(FCSFAIL, fcsfail); 164 ADJUST(PLCPFAIL, plcpfail); 165 ADJUST(CONTROL, control); 166 ADJUST(CONTROL, pspoll); 167 ADJUST(OTHER_BSS, other_bss); 168 169 #undef ADJUST 170 } 171 172 /* 173 * NOTE: Be very careful when changing this function, it must NOT return 174 * an error on interface type changes that have been pre-checked, so most 175 * checks should be in ieee80211_check_concurrent_iface. 176 */ 177 static int ieee80211_do_open(struct net_device *dev, bool coming_up) 178 { 179 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 180 struct ieee80211_local *local = sdata->local; 181 struct sta_info *sta; 182 u32 changed = 0; 183 int res; 184 u32 hw_reconf_flags = 0; 185 186 switch (sdata->vif.type) { 187 case NL80211_IFTYPE_WDS: 188 if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) 189 return -ENOLINK; 190 break; 191 case NL80211_IFTYPE_AP_VLAN: 192 if (!sdata->bss) 193 return -ENOLINK; 194 list_add(&sdata->u.vlan.list, &sdata->bss->vlans); 195 break; 196 case NL80211_IFTYPE_AP: 197 sdata->bss = &sdata->u.ap; 198 break; 199 case NL80211_IFTYPE_MESH_POINT: 200 case NL80211_IFTYPE_STATION: 201 case NL80211_IFTYPE_MONITOR: 202 case NL80211_IFTYPE_ADHOC: 203 /* no special treatment */ 204 break; 205 case NL80211_IFTYPE_UNSPECIFIED: 206 case NUM_NL80211_IFTYPES: 207 case NL80211_IFTYPE_P2P_CLIENT: 208 case NL80211_IFTYPE_P2P_GO: 209 /* cannot happen */ 210 WARN_ON(1); 211 break; 212 } 213 214 if (local->open_count == 0) { 215 res = drv_start(local); 216 if (res) 217 goto err_del_bss; 218 if (local->ops->napi_poll) 219 napi_enable(&local->napi); 220 /* we're brought up, everything changes */ 221 hw_reconf_flags = ~0; 222 ieee80211_led_radio(local, true); 223 ieee80211_mod_tpt_led_trig(local, 224 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 225 } 226 227 /* 228 * Copy the hopefully now-present MAC address to 229 * this interface, if it has the special null one. 230 */ 231 if (is_zero_ether_addr(dev->dev_addr)) { 232 memcpy(dev->dev_addr, 233 local->hw.wiphy->perm_addr, 234 ETH_ALEN); 235 memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); 236 237 if (!is_valid_ether_addr(dev->dev_addr)) { 238 if (!local->open_count) 239 drv_stop(local); 240 return -EADDRNOTAVAIL; 241 } 242 } 243 244 switch (sdata->vif.type) { 245 case NL80211_IFTYPE_AP_VLAN: 246 /* no need to tell driver */ 247 break; 248 case NL80211_IFTYPE_MONITOR: 249 if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { 250 local->cooked_mntrs++; 251 break; 252 } 253 254 /* must be before the call to ieee80211_configure_filter */ 255 local->monitors++; 256 if (local->monitors == 1) { 257 local->hw.conf.flags |= IEEE80211_CONF_MONITOR; 258 hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; 259 } 260 261 ieee80211_adjust_monitor_flags(sdata, 1); 262 ieee80211_configure_filter(local); 263 264 netif_carrier_on(dev); 265 break; 266 default: 267 if (coming_up) { 268 res = drv_add_interface(local, &sdata->vif); 269 if (res) 270 goto err_stop; 271 } 272 273 if (sdata->vif.type == NL80211_IFTYPE_AP) { 274 local->fif_pspoll++; 275 local->fif_probe_req++; 276 277 ieee80211_configure_filter(local); 278 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 279 local->fif_probe_req++; 280 } 281 282 changed |= ieee80211_reset_erp_info(sdata); 283 ieee80211_bss_info_change_notify(sdata, changed); 284 285 if (sdata->vif.type == NL80211_IFTYPE_STATION) 286 netif_carrier_off(dev); 287 else 288 netif_carrier_on(dev); 289 } 290 291 set_bit(SDATA_STATE_RUNNING, &sdata->state); 292 293 if (sdata->vif.type == NL80211_IFTYPE_WDS) { 294 /* Create STA entry for the WDS peer */ 295 sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, 296 GFP_KERNEL); 297 if (!sta) { 298 res = -ENOMEM; 299 goto err_del_interface; 300 } 301 302 /* no locking required since STA is not live yet */ 303 sta->flags |= WLAN_STA_AUTHORIZED; 304 305 res = sta_info_insert(sta); 306 if (res) { 307 /* STA has been freed */ 308 goto err_del_interface; 309 } 310 311 rate_control_rate_init(sta); 312 } 313 314 /* 315 * set_multicast_list will be invoked by the networking core 316 * which will check whether any increments here were done in 317 * error and sync them down to the hardware as filter flags. 318 */ 319 if (sdata->flags & IEEE80211_SDATA_ALLMULTI) 320 atomic_inc(&local->iff_allmultis); 321 322 if (sdata->flags & IEEE80211_SDATA_PROMISC) 323 atomic_inc(&local->iff_promiscs); 324 325 mutex_lock(&local->mtx); 326 hw_reconf_flags |= __ieee80211_recalc_idle(local); 327 mutex_unlock(&local->mtx); 328 329 if (coming_up) 330 local->open_count++; 331 332 if (hw_reconf_flags) { 333 ieee80211_hw_config(local, hw_reconf_flags); 334 /* 335 * set default queue parameters so drivers don't 336 * need to initialise the hardware if the hardware 337 * doesn't start up with sane defaults 338 */ 339 ieee80211_set_wmm_default(sdata); 340 } 341 342 ieee80211_recalc_ps(local, -1); 343 344 netif_tx_start_all_queues(dev); 345 346 return 0; 347 err_del_interface: 348 drv_remove_interface(local, &sdata->vif); 349 err_stop: 350 if (!local->open_count) 351 drv_stop(local); 352 err_del_bss: 353 sdata->bss = NULL; 354 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 355 list_del(&sdata->u.vlan.list); 356 clear_bit(SDATA_STATE_RUNNING, &sdata->state); 357 return res; 358 } 359 360 static int ieee80211_open(struct net_device *dev) 361 { 362 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 363 int err; 364 365 /* fail early if user set an invalid address */ 366 if (!is_zero_ether_addr(dev->dev_addr) && 367 !is_valid_ether_addr(dev->dev_addr)) 368 return -EADDRNOTAVAIL; 369 370 err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); 371 if (err) 372 return err; 373 374 return ieee80211_do_open(dev, true); 375 } 376 377 static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, 378 bool going_down) 379 { 380 struct ieee80211_local *local = sdata->local; 381 unsigned long flags; 382 struct sk_buff *skb, *tmp; 383 u32 hw_reconf_flags = 0; 384 int i; 385 386 if (local->scan_sdata == sdata) 387 ieee80211_scan_cancel(local); 388 389 clear_bit(SDATA_STATE_RUNNING, &sdata->state); 390 391 /* 392 * Stop TX on this interface first. 393 */ 394 netif_tx_stop_all_queues(sdata->dev); 395 396 /* 397 * Purge work for this interface. 398 */ 399 ieee80211_work_purge(sdata); 400 401 /* 402 * Remove all stations associated with this interface. 403 * 404 * This must be done before calling ops->remove_interface() 405 * because otherwise we can later invoke ops->sta_notify() 406 * whenever the STAs are removed, and that invalidates driver 407 * assumptions about always getting a vif pointer that is valid 408 * (because if we remove a STA after ops->remove_interface() 409 * the driver will have removed the vif info already!) 410 * 411 * This is relevant only in AP, WDS and mesh modes, since in 412 * all other modes we've already removed all stations when 413 * disconnecting etc. 414 */ 415 sta_info_flush(local, sdata); 416 417 /* 418 * Don't count this interface for promisc/allmulti while it 419 * is down. dev_mc_unsync() will invoke set_multicast_list 420 * on the master interface which will sync these down to the 421 * hardware as filter flags. 422 */ 423 if (sdata->flags & IEEE80211_SDATA_ALLMULTI) 424 atomic_dec(&local->iff_allmultis); 425 426 if (sdata->flags & IEEE80211_SDATA_PROMISC) 427 atomic_dec(&local->iff_promiscs); 428 429 if (sdata->vif.type == NL80211_IFTYPE_AP) { 430 local->fif_pspoll--; 431 local->fif_probe_req--; 432 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 433 local->fif_probe_req--; 434 } 435 436 netif_addr_lock_bh(sdata->dev); 437 spin_lock_bh(&local->filter_lock); 438 __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, 439 sdata->dev->addr_len); 440 spin_unlock_bh(&local->filter_lock); 441 netif_addr_unlock_bh(sdata->dev); 442 443 ieee80211_configure_filter(local); 444 445 del_timer_sync(&local->dynamic_ps_timer); 446 cancel_work_sync(&local->dynamic_ps_enable_work); 447 448 /* APs need special treatment */ 449 if (sdata->vif.type == NL80211_IFTYPE_AP) { 450 struct ieee80211_sub_if_data *vlan, *tmpsdata; 451 struct beacon_data *old_beacon = sdata->u.ap.beacon; 452 453 /* sdata_running will return false, so this will disable */ 454 ieee80211_bss_info_change_notify(sdata, 455 BSS_CHANGED_BEACON_ENABLED); 456 457 /* remove beacon */ 458 rcu_assign_pointer(sdata->u.ap.beacon, NULL); 459 synchronize_rcu(); 460 kfree(old_beacon); 461 462 /* free all potentially still buffered bcast frames */ 463 while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) { 464 local->total_ps_buffered--; 465 dev_kfree_skb(skb); 466 } 467 468 /* down all dependent devices, that is VLANs */ 469 list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, 470 u.vlan.list) 471 dev_close(vlan->dev); 472 WARN_ON(!list_empty(&sdata->u.ap.vlans)); 473 } 474 475 if (going_down) 476 local->open_count--; 477 478 switch (sdata->vif.type) { 479 case NL80211_IFTYPE_AP_VLAN: 480 list_del(&sdata->u.vlan.list); 481 /* no need to tell driver */ 482 break; 483 case NL80211_IFTYPE_MONITOR: 484 if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { 485 local->cooked_mntrs--; 486 break; 487 } 488 489 local->monitors--; 490 if (local->monitors == 0) { 491 local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; 492 hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; 493 } 494 495 ieee80211_adjust_monitor_flags(sdata, -1); 496 ieee80211_configure_filter(local); 497 break; 498 default: 499 flush_work(&sdata->work); 500 /* 501 * When we get here, the interface is marked down. 502 * Call synchronize_rcu() to wait for the RX path 503 * should it be using the interface and enqueuing 504 * frames at this very time on another CPU. 505 */ 506 synchronize_rcu(); 507 skb_queue_purge(&sdata->skb_queue); 508 509 /* 510 * Disable beaconing here for mesh only, AP and IBSS 511 * are already taken care of. 512 */ 513 if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) 514 ieee80211_bss_info_change_notify(sdata, 515 BSS_CHANGED_BEACON_ENABLED); 516 517 /* 518 * Free all remaining keys, there shouldn't be any, 519 * except maybe group keys in AP more or WDS? 520 */ 521 ieee80211_free_keys(sdata); 522 523 if (going_down) 524 drv_remove_interface(local, &sdata->vif); 525 } 526 527 sdata->bss = NULL; 528 529 mutex_lock(&local->mtx); 530 hw_reconf_flags |= __ieee80211_recalc_idle(local); 531 mutex_unlock(&local->mtx); 532 533 ieee80211_recalc_ps(local, -1); 534 535 if (local->open_count == 0) { 536 if (local->ops->napi_poll) 537 napi_disable(&local->napi); 538 ieee80211_clear_tx_pending(local); 539 ieee80211_stop_device(local); 540 541 /* no reconfiguring after stop! */ 542 hw_reconf_flags = 0; 543 } 544 545 /* do after stop to avoid reconfiguring when we stop anyway */ 546 if (hw_reconf_flags) 547 ieee80211_hw_config(local, hw_reconf_flags); 548 549 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 550 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { 551 skb_queue_walk_safe(&local->pending[i], skb, tmp) { 552 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 553 if (info->control.vif == &sdata->vif) { 554 __skb_unlink(skb, &local->pending[i]); 555 dev_kfree_skb_irq(skb); 556 } 557 } 558 } 559 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 560 } 561 562 static int ieee80211_stop(struct net_device *dev) 563 { 564 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 565 566 ieee80211_do_stop(sdata, true); 567 568 return 0; 569 } 570 571 static void ieee80211_set_multicast_list(struct net_device *dev) 572 { 573 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 574 struct ieee80211_local *local = sdata->local; 575 int allmulti, promisc, sdata_allmulti, sdata_promisc; 576 577 allmulti = !!(dev->flags & IFF_ALLMULTI); 578 promisc = !!(dev->flags & IFF_PROMISC); 579 sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); 580 sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); 581 582 if (allmulti != sdata_allmulti) { 583 if (dev->flags & IFF_ALLMULTI) 584 atomic_inc(&local->iff_allmultis); 585 else 586 atomic_dec(&local->iff_allmultis); 587 sdata->flags ^= IEEE80211_SDATA_ALLMULTI; 588 } 589 590 if (promisc != sdata_promisc) { 591 if (dev->flags & IFF_PROMISC) 592 atomic_inc(&local->iff_promiscs); 593 else 594 atomic_dec(&local->iff_promiscs); 595 sdata->flags ^= IEEE80211_SDATA_PROMISC; 596 } 597 spin_lock_bh(&local->filter_lock); 598 __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); 599 spin_unlock_bh(&local->filter_lock); 600 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 601 } 602 603 /* 604 * Called when the netdev is removed or, by the code below, before 605 * the interface type changes. 606 */ 607 static void ieee80211_teardown_sdata(struct net_device *dev) 608 { 609 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 610 struct ieee80211_local *local = sdata->local; 611 int flushed; 612 int i; 613 614 /* free extra data */ 615 ieee80211_free_keys(sdata); 616 617 ieee80211_debugfs_remove_netdev(sdata); 618 619 for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) 620 __skb_queue_purge(&sdata->fragments[i].skb_list); 621 sdata->fragment_next = 0; 622 623 if (ieee80211_vif_is_mesh(&sdata->vif)) 624 mesh_rmc_free(sdata); 625 626 flushed = sta_info_flush(local, sdata); 627 WARN_ON(flushed); 628 } 629 630 static u16 ieee80211_netdev_select_queue(struct net_device *dev, 631 struct sk_buff *skb) 632 { 633 return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); 634 } 635 636 static const struct net_device_ops ieee80211_dataif_ops = { 637 .ndo_open = ieee80211_open, 638 .ndo_stop = ieee80211_stop, 639 .ndo_uninit = ieee80211_teardown_sdata, 640 .ndo_start_xmit = ieee80211_subif_start_xmit, 641 .ndo_set_multicast_list = ieee80211_set_multicast_list, 642 .ndo_change_mtu = ieee80211_change_mtu, 643 .ndo_set_mac_address = ieee80211_change_mac, 644 .ndo_select_queue = ieee80211_netdev_select_queue, 645 }; 646 647 static u16 ieee80211_monitor_select_queue(struct net_device *dev, 648 struct sk_buff *skb) 649 { 650 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 651 struct ieee80211_local *local = sdata->local; 652 struct ieee80211_hdr *hdr; 653 struct ieee80211_radiotap_header *rtap = (void *)skb->data; 654 u8 *p; 655 656 if (local->hw.queues < 4) 657 return 0; 658 659 if (skb->len < 4 || 660 skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) 661 return 0; /* doesn't matter, frame will be dropped */ 662 663 hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); 664 665 if (!ieee80211_is_data(hdr->frame_control)) { 666 skb->priority = 7; 667 return ieee802_1d_to_ac[skb->priority]; 668 } 669 if (!ieee80211_is_data_qos(hdr->frame_control)) { 670 skb->priority = 0; 671 return ieee802_1d_to_ac[skb->priority]; 672 } 673 674 p = ieee80211_get_qos_ctl(hdr); 675 skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK; 676 677 return ieee80211_downgrade_queue(local, skb); 678 } 679 680 static const struct net_device_ops ieee80211_monitorif_ops = { 681 .ndo_open = ieee80211_open, 682 .ndo_stop = ieee80211_stop, 683 .ndo_uninit = ieee80211_teardown_sdata, 684 .ndo_start_xmit = ieee80211_monitor_start_xmit, 685 .ndo_set_multicast_list = ieee80211_set_multicast_list, 686 .ndo_change_mtu = ieee80211_change_mtu, 687 .ndo_set_mac_address = eth_mac_addr, 688 .ndo_select_queue = ieee80211_monitor_select_queue, 689 }; 690 691 static void ieee80211_if_setup(struct net_device *dev) 692 { 693 ether_setup(dev); 694 dev->netdev_ops = &ieee80211_dataif_ops; 695 dev->destructor = free_netdev; 696 } 697 698 static void ieee80211_iface_work(struct work_struct *work) 699 { 700 struct ieee80211_sub_if_data *sdata = 701 container_of(work, struct ieee80211_sub_if_data, work); 702 struct ieee80211_local *local = sdata->local; 703 struct sk_buff *skb; 704 struct sta_info *sta; 705 struct ieee80211_ra_tid *ra_tid; 706 707 if (!ieee80211_sdata_running(sdata)) 708 return; 709 710 if (local->scanning) 711 return; 712 713 /* 714 * ieee80211_queue_work() should have picked up most cases, 715 * here we'll pick the rest. 716 */ 717 if (WARN(local->suspended, 718 "interface work scheduled while going to suspend\n")) 719 return; 720 721 /* first process frames */ 722 while ((skb = skb_dequeue(&sdata->skb_queue))) { 723 struct ieee80211_mgmt *mgmt = (void *)skb->data; 724 725 if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { 726 ra_tid = (void *)&skb->cb; 727 ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, 728 ra_tid->tid); 729 } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { 730 ra_tid = (void *)&skb->cb; 731 ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, 732 ra_tid->tid); 733 } else if (ieee80211_is_action(mgmt->frame_control) && 734 mgmt->u.action.category == WLAN_CATEGORY_BACK) { 735 int len = skb->len; 736 737 mutex_lock(&local->sta_mtx); 738 sta = sta_info_get_bss(sdata, mgmt->sa); 739 if (sta) { 740 switch (mgmt->u.action.u.addba_req.action_code) { 741 case WLAN_ACTION_ADDBA_REQ: 742 ieee80211_process_addba_request( 743 local, sta, mgmt, len); 744 break; 745 case WLAN_ACTION_ADDBA_RESP: 746 ieee80211_process_addba_resp(local, sta, 747 mgmt, len); 748 break; 749 case WLAN_ACTION_DELBA: 750 ieee80211_process_delba(sdata, sta, 751 mgmt, len); 752 break; 753 default: 754 WARN_ON(1); 755 break; 756 } 757 } 758 mutex_unlock(&local->sta_mtx); 759 } else if (ieee80211_is_data_qos(mgmt->frame_control)) { 760 struct ieee80211_hdr *hdr = (void *)mgmt; 761 /* 762 * So the frame isn't mgmt, but frame_control 763 * is at the right place anyway, of course, so 764 * the if statement is correct. 765 * 766 * Warn if we have other data frame types here, 767 * they must not get here. 768 */ 769 WARN_ON(hdr->frame_control & 770 cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); 771 WARN_ON(!(hdr->seq_ctrl & 772 cpu_to_le16(IEEE80211_SCTL_FRAG))); 773 /* 774 * This was a fragment of a frame, received while 775 * a block-ack session was active. That cannot be 776 * right, so terminate the session. 777 */ 778 mutex_lock(&local->sta_mtx); 779 sta = sta_info_get_bss(sdata, mgmt->sa); 780 if (sta) { 781 u16 tid = *ieee80211_get_qos_ctl(hdr) & 782 IEEE80211_QOS_CTL_TID_MASK; 783 784 __ieee80211_stop_rx_ba_session( 785 sta, tid, WLAN_BACK_RECIPIENT, 786 WLAN_REASON_QSTA_REQUIRE_SETUP, 787 true); 788 } 789 mutex_unlock(&local->sta_mtx); 790 } else switch (sdata->vif.type) { 791 case NL80211_IFTYPE_STATION: 792 ieee80211_sta_rx_queued_mgmt(sdata, skb); 793 break; 794 case NL80211_IFTYPE_ADHOC: 795 ieee80211_ibss_rx_queued_mgmt(sdata, skb); 796 break; 797 case NL80211_IFTYPE_MESH_POINT: 798 if (!ieee80211_vif_is_mesh(&sdata->vif)) 799 break; 800 ieee80211_mesh_rx_queued_mgmt(sdata, skb); 801 break; 802 default: 803 WARN(1, "frame for unexpected interface type"); 804 break; 805 } 806 807 kfree_skb(skb); 808 } 809 810 /* then other type-dependent work */ 811 switch (sdata->vif.type) { 812 case NL80211_IFTYPE_STATION: 813 ieee80211_sta_work(sdata); 814 break; 815 case NL80211_IFTYPE_ADHOC: 816 ieee80211_ibss_work(sdata); 817 break; 818 case NL80211_IFTYPE_MESH_POINT: 819 if (!ieee80211_vif_is_mesh(&sdata->vif)) 820 break; 821 ieee80211_mesh_work(sdata); 822 break; 823 default: 824 break; 825 } 826 } 827 828 829 /* 830 * Helper function to initialise an interface to a specific type. 831 */ 832 static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, 833 enum nl80211_iftype type) 834 { 835 /* clear type-dependent union */ 836 memset(&sdata->u, 0, sizeof(sdata->u)); 837 838 /* and set some type-dependent values */ 839 sdata->vif.type = type; 840 sdata->vif.p2p = false; 841 sdata->dev->netdev_ops = &ieee80211_dataif_ops; 842 sdata->wdev.iftype = type; 843 844 sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); 845 sdata->control_port_no_encrypt = false; 846 847 /* only monitor differs */ 848 sdata->dev->type = ARPHRD_ETHER; 849 850 skb_queue_head_init(&sdata->skb_queue); 851 INIT_WORK(&sdata->work, ieee80211_iface_work); 852 853 switch (type) { 854 case NL80211_IFTYPE_P2P_GO: 855 type = NL80211_IFTYPE_AP; 856 sdata->vif.type = type; 857 sdata->vif.p2p = true; 858 /* fall through */ 859 case NL80211_IFTYPE_AP: 860 skb_queue_head_init(&sdata->u.ap.ps_bc_buf); 861 INIT_LIST_HEAD(&sdata->u.ap.vlans); 862 break; 863 case NL80211_IFTYPE_P2P_CLIENT: 864 type = NL80211_IFTYPE_STATION; 865 sdata->vif.type = type; 866 sdata->vif.p2p = true; 867 /* fall through */ 868 case NL80211_IFTYPE_STATION: 869 ieee80211_sta_setup_sdata(sdata); 870 break; 871 case NL80211_IFTYPE_ADHOC: 872 ieee80211_ibss_setup_sdata(sdata); 873 break; 874 case NL80211_IFTYPE_MESH_POINT: 875 if (ieee80211_vif_is_mesh(&sdata->vif)) 876 ieee80211_mesh_init_sdata(sdata); 877 break; 878 case NL80211_IFTYPE_MONITOR: 879 sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; 880 sdata->dev->netdev_ops = &ieee80211_monitorif_ops; 881 sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | 882 MONITOR_FLAG_OTHER_BSS; 883 break; 884 case NL80211_IFTYPE_WDS: 885 case NL80211_IFTYPE_AP_VLAN: 886 break; 887 case NL80211_IFTYPE_UNSPECIFIED: 888 case NUM_NL80211_IFTYPES: 889 BUG(); 890 break; 891 } 892 893 ieee80211_debugfs_add_netdev(sdata); 894 } 895 896 static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, 897 enum nl80211_iftype type) 898 { 899 struct ieee80211_local *local = sdata->local; 900 int ret, err; 901 enum nl80211_iftype internal_type = type; 902 bool p2p = false; 903 904 ASSERT_RTNL(); 905 906 if (!local->ops->change_interface) 907 return -EBUSY; 908 909 switch (sdata->vif.type) { 910 case NL80211_IFTYPE_AP: 911 case NL80211_IFTYPE_STATION: 912 case NL80211_IFTYPE_ADHOC: 913 /* 914 * Could maybe also all others here? 915 * Just not sure how that interacts 916 * with the RX/config path e.g. for 917 * mesh. 918 */ 919 break; 920 default: 921 return -EBUSY; 922 } 923 924 switch (type) { 925 case NL80211_IFTYPE_AP: 926 case NL80211_IFTYPE_STATION: 927 case NL80211_IFTYPE_ADHOC: 928 /* 929 * Could probably support everything 930 * but WDS here (WDS do_open can fail 931 * under memory pressure, which this 932 * code isn't prepared to handle). 933 */ 934 break; 935 case NL80211_IFTYPE_P2P_CLIENT: 936 p2p = true; 937 internal_type = NL80211_IFTYPE_STATION; 938 break; 939 case NL80211_IFTYPE_P2P_GO: 940 p2p = true; 941 internal_type = NL80211_IFTYPE_AP; 942 break; 943 default: 944 return -EBUSY; 945 } 946 947 ret = ieee80211_check_concurrent_iface(sdata, internal_type); 948 if (ret) 949 return ret; 950 951 ieee80211_do_stop(sdata, false); 952 953 ieee80211_teardown_sdata(sdata->dev); 954 955 ret = drv_change_interface(local, sdata, internal_type, p2p); 956 if (ret) 957 type = sdata->vif.type; 958 959 ieee80211_setup_sdata(sdata, type); 960 961 err = ieee80211_do_open(sdata->dev, false); 962 WARN(err, "type change: do_open returned %d", err); 963 964 return ret; 965 } 966 967 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 968 enum nl80211_iftype type) 969 { 970 int ret; 971 972 ASSERT_RTNL(); 973 974 if (type == ieee80211_vif_type_p2p(&sdata->vif)) 975 return 0; 976 977 /* Setting ad-hoc mode on non-IBSS channel is not supported. */ 978 if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && 979 type == NL80211_IFTYPE_ADHOC) 980 return -EOPNOTSUPP; 981 982 if (ieee80211_sdata_running(sdata)) { 983 ret = ieee80211_runtime_change_iftype(sdata, type); 984 if (ret) 985 return ret; 986 } else { 987 /* Purge and reset type-dependent state. */ 988 ieee80211_teardown_sdata(sdata->dev); 989 ieee80211_setup_sdata(sdata, type); 990 } 991 992 /* reset some values that shouldn't be kept across type changes */ 993 sdata->vif.bss_conf.basic_rates = 994 ieee80211_mandatory_rates(sdata->local, 995 sdata->local->hw.conf.channel->band); 996 sdata->drop_unencrypted = 0; 997 if (type == NL80211_IFTYPE_STATION) 998 sdata->u.mgd.use_4addr = false; 999 1000 return 0; 1001 } 1002 1003 static void ieee80211_assign_perm_addr(struct ieee80211_local *local, 1004 struct net_device *dev, 1005 enum nl80211_iftype type) 1006 { 1007 struct ieee80211_sub_if_data *sdata; 1008 u64 mask, start, addr, val, inc; 1009 u8 *m; 1010 u8 tmp_addr[ETH_ALEN]; 1011 int i; 1012 1013 /* default ... something at least */ 1014 memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); 1015 1016 if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && 1017 local->hw.wiphy->n_addresses <= 1) 1018 return; 1019 1020 1021 mutex_lock(&local->iflist_mtx); 1022 1023 switch (type) { 1024 case NL80211_IFTYPE_MONITOR: 1025 /* doesn't matter */ 1026 break; 1027 case NL80211_IFTYPE_WDS: 1028 case NL80211_IFTYPE_AP_VLAN: 1029 /* match up with an AP interface */ 1030 list_for_each_entry(sdata, &local->interfaces, list) { 1031 if (sdata->vif.type != NL80211_IFTYPE_AP) 1032 continue; 1033 memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); 1034 break; 1035 } 1036 /* keep default if no AP interface present */ 1037 break; 1038 default: 1039 /* assign a new address if possible -- try n_addresses first */ 1040 for (i = 0; i < local->hw.wiphy->n_addresses; i++) { 1041 bool used = false; 1042 1043 list_for_each_entry(sdata, &local->interfaces, list) { 1044 if (memcmp(local->hw.wiphy->addresses[i].addr, 1045 sdata->vif.addr, ETH_ALEN) == 0) { 1046 used = true; 1047 break; 1048 } 1049 } 1050 1051 if (!used) { 1052 memcpy(dev->perm_addr, 1053 local->hw.wiphy->addresses[i].addr, 1054 ETH_ALEN); 1055 break; 1056 } 1057 } 1058 1059 /* try mask if available */ 1060 if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) 1061 break; 1062 1063 m = local->hw.wiphy->addr_mask; 1064 mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | 1065 ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | 1066 ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); 1067 1068 if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { 1069 /* not a contiguous mask ... not handled now! */ 1070 printk(KERN_DEBUG "not contiguous\n"); 1071 break; 1072 } 1073 1074 m = local->hw.wiphy->perm_addr; 1075 start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | 1076 ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | 1077 ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); 1078 1079 inc = 1ULL<<__ffs64(mask); 1080 val = (start & mask); 1081 addr = (start & ~mask) | (val & mask); 1082 do { 1083 bool used = false; 1084 1085 tmp_addr[5] = addr >> 0*8; 1086 tmp_addr[4] = addr >> 1*8; 1087 tmp_addr[3] = addr >> 2*8; 1088 tmp_addr[2] = addr >> 3*8; 1089 tmp_addr[1] = addr >> 4*8; 1090 tmp_addr[0] = addr >> 5*8; 1091 1092 val += inc; 1093 1094 list_for_each_entry(sdata, &local->interfaces, list) { 1095 if (memcmp(tmp_addr, sdata->vif.addr, 1096 ETH_ALEN) == 0) { 1097 used = true; 1098 break; 1099 } 1100 } 1101 1102 if (!used) { 1103 memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); 1104 break; 1105 } 1106 addr = (start & ~mask) | (val & mask); 1107 } while (addr != start); 1108 1109 break; 1110 } 1111 1112 mutex_unlock(&local->iflist_mtx); 1113 } 1114 1115 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1116 struct net_device **new_dev, enum nl80211_iftype type, 1117 struct vif_params *params) 1118 { 1119 struct net_device *ndev; 1120 struct ieee80211_sub_if_data *sdata = NULL; 1121 int ret, i; 1122 1123 ASSERT_RTNL(); 1124 1125 ndev = alloc_netdev_mq(sizeof(*sdata) + local->hw.vif_data_size, 1126 name, ieee80211_if_setup, local->hw.queues); 1127 if (!ndev) 1128 return -ENOMEM; 1129 dev_net_set(ndev, wiphy_net(local->hw.wiphy)); 1130 1131 ndev->needed_headroom = local->tx_headroom + 1132 4*6 /* four MAC addresses */ 1133 + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ 1134 + 6 /* mesh */ 1135 + 8 /* rfc1042/bridge tunnel */ 1136 - ETH_HLEN /* ethernet hard_header_len */ 1137 + IEEE80211_ENCRYPT_HEADROOM; 1138 ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; 1139 1140 ret = dev_alloc_name(ndev, ndev->name); 1141 if (ret < 0) 1142 goto fail; 1143 1144 ieee80211_assign_perm_addr(local, ndev, type); 1145 memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); 1146 SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); 1147 1148 /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ 1149 sdata = netdev_priv(ndev); 1150 ndev->ieee80211_ptr = &sdata->wdev; 1151 memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); 1152 memcpy(sdata->name, ndev->name, IFNAMSIZ); 1153 1154 /* initialise type-independent data */ 1155 sdata->wdev.wiphy = local->hw.wiphy; 1156 sdata->local = local; 1157 sdata->dev = ndev; 1158 #ifdef CONFIG_INET 1159 sdata->arp_filter_state = true; 1160 #endif 1161 1162 for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) 1163 skb_queue_head_init(&sdata->fragments[i].skb_list); 1164 1165 INIT_LIST_HEAD(&sdata->key_list); 1166 1167 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 1168 struct ieee80211_supported_band *sband; 1169 sband = local->hw.wiphy->bands[i]; 1170 sdata->rc_rateidx_mask[i] = 1171 sband ? (1 << sband->n_bitrates) - 1 : 0; 1172 } 1173 1174 /* setup type-dependent data */ 1175 ieee80211_setup_sdata(sdata, type); 1176 1177 if (params) { 1178 ndev->ieee80211_ptr->use_4addr = params->use_4addr; 1179 if (type == NL80211_IFTYPE_STATION) 1180 sdata->u.mgd.use_4addr = params->use_4addr; 1181 } 1182 1183 ret = register_netdevice(ndev); 1184 if (ret) 1185 goto fail; 1186 1187 mutex_lock(&local->iflist_mtx); 1188 list_add_tail_rcu(&sdata->list, &local->interfaces); 1189 mutex_unlock(&local->iflist_mtx); 1190 1191 if (new_dev) 1192 *new_dev = ndev; 1193 1194 return 0; 1195 1196 fail: 1197 free_netdev(ndev); 1198 return ret; 1199 } 1200 1201 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) 1202 { 1203 ASSERT_RTNL(); 1204 1205 mutex_lock(&sdata->local->iflist_mtx); 1206 list_del_rcu(&sdata->list); 1207 mutex_unlock(&sdata->local->iflist_mtx); 1208 1209 synchronize_rcu(); 1210 unregister_netdevice(sdata->dev); 1211 } 1212 1213 /* 1214 * Remove all interfaces, may only be called at hardware unregistration 1215 * time because it doesn't do RCU-safe list removals. 1216 */ 1217 void ieee80211_remove_interfaces(struct ieee80211_local *local) 1218 { 1219 struct ieee80211_sub_if_data *sdata, *tmp; 1220 LIST_HEAD(unreg_list); 1221 1222 ASSERT_RTNL(); 1223 1224 mutex_lock(&local->iflist_mtx); 1225 list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { 1226 list_del(&sdata->list); 1227 1228 unregister_netdevice_queue(sdata->dev, &unreg_list); 1229 } 1230 mutex_unlock(&local->iflist_mtx); 1231 unregister_netdevice_many(&unreg_list); 1232 list_del(&unreg_list); 1233 } 1234 1235 static u32 ieee80211_idle_off(struct ieee80211_local *local, 1236 const char *reason) 1237 { 1238 if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) 1239 return 0; 1240 1241 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1242 wiphy_debug(local->hw.wiphy, "device no longer idle - %s\n", reason); 1243 #endif 1244 1245 local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; 1246 return IEEE80211_CONF_CHANGE_IDLE; 1247 } 1248 1249 static u32 ieee80211_idle_on(struct ieee80211_local *local) 1250 { 1251 if (local->hw.conf.flags & IEEE80211_CONF_IDLE) 1252 return 0; 1253 1254 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1255 wiphy_debug(local->hw.wiphy, "device now idle\n"); 1256 #endif 1257 1258 drv_flush(local, false); 1259 1260 local->hw.conf.flags |= IEEE80211_CONF_IDLE; 1261 return IEEE80211_CONF_CHANGE_IDLE; 1262 } 1263 1264 u32 __ieee80211_recalc_idle(struct ieee80211_local *local) 1265 { 1266 struct ieee80211_sub_if_data *sdata; 1267 int count = 0; 1268 bool working = false, scanning = false, hw_roc = false; 1269 struct ieee80211_work *wk; 1270 unsigned int led_trig_start = 0, led_trig_stop = 0; 1271 1272 #ifdef CONFIG_PROVE_LOCKING 1273 WARN_ON(debug_locks && !lockdep_rtnl_is_held() && 1274 !lockdep_is_held(&local->iflist_mtx)); 1275 #endif 1276 lockdep_assert_held(&local->mtx); 1277 1278 list_for_each_entry(sdata, &local->interfaces, list) { 1279 if (!ieee80211_sdata_running(sdata)) { 1280 sdata->vif.bss_conf.idle = true; 1281 continue; 1282 } 1283 1284 sdata->old_idle = sdata->vif.bss_conf.idle; 1285 1286 /* do not count disabled managed interfaces */ 1287 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1288 !sdata->u.mgd.associated) { 1289 sdata->vif.bss_conf.idle = true; 1290 continue; 1291 } 1292 /* do not count unused IBSS interfaces */ 1293 if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 1294 !sdata->u.ibss.ssid_len) { 1295 sdata->vif.bss_conf.idle = true; 1296 continue; 1297 } 1298 /* count everything else */ 1299 count++; 1300 } 1301 1302 list_for_each_entry(wk, &local->work_list, list) { 1303 working = true; 1304 wk->sdata->vif.bss_conf.idle = false; 1305 } 1306 1307 if (local->scan_sdata) { 1308 scanning = true; 1309 local->scan_sdata->vif.bss_conf.idle = false; 1310 } 1311 1312 if (local->hw_roc_channel) 1313 hw_roc = true; 1314 1315 list_for_each_entry(sdata, &local->interfaces, list) { 1316 if (sdata->old_idle == sdata->vif.bss_conf.idle) 1317 continue; 1318 if (!ieee80211_sdata_running(sdata)) 1319 continue; 1320 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); 1321 } 1322 1323 if (working || scanning || hw_roc) 1324 led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; 1325 else 1326 led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; 1327 1328 if (count) 1329 led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; 1330 else 1331 led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; 1332 1333 ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); 1334 1335 if (hw_roc) 1336 return ieee80211_idle_off(local, "hw remain-on-channel"); 1337 if (working) 1338 return ieee80211_idle_off(local, "working"); 1339 if (scanning) 1340 return ieee80211_idle_off(local, "scanning"); 1341 if (!count) 1342 return ieee80211_idle_on(local); 1343 else 1344 return ieee80211_idle_off(local, "in use"); 1345 1346 return 0; 1347 } 1348 1349 void ieee80211_recalc_idle(struct ieee80211_local *local) 1350 { 1351 u32 chg; 1352 1353 mutex_lock(&local->iflist_mtx); 1354 chg = __ieee80211_recalc_idle(local); 1355 mutex_unlock(&local->iflist_mtx); 1356 if (chg) 1357 ieee80211_hw_config(local, chg); 1358 } 1359 1360 static int netdev_notify(struct notifier_block *nb, 1361 unsigned long state, 1362 void *ndev) 1363 { 1364 struct net_device *dev = ndev; 1365 struct ieee80211_sub_if_data *sdata; 1366 1367 if (state != NETDEV_CHANGENAME) 1368 return 0; 1369 1370 if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) 1371 return 0; 1372 1373 if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) 1374 return 0; 1375 1376 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1377 1378 memcpy(sdata->name, dev->name, IFNAMSIZ); 1379 1380 ieee80211_debugfs_rename_netdev(sdata); 1381 return 0; 1382 } 1383 1384 static struct notifier_block mac80211_netdev_notifier = { 1385 .notifier_call = netdev_notify, 1386 }; 1387 1388 int ieee80211_iface_init(void) 1389 { 1390 return register_netdevice_notifier(&mac80211_netdev_notifier); 1391 } 1392 1393 void ieee80211_iface_exit(void) 1394 { 1395 unregister_netdevice_notifier(&mac80211_netdev_notifier); 1396 } 1397