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00011 #include <net/mac80211.h>
00012 #include <linux/module.h>
00013 #include <linux/init.h>
00014 #include <linux/netdevice.h>
00015 #include <linux/types.h>
00016 #include <linux/slab.h>
00017 #include <linux/skbuff.h>
00018 #include <linux/etherdevice.h>
00019 #include <linux/if_arp.h>
00020 #include <linux/rtnetlink.h>
00021 #include <linux/bitmap.h>
00022 #include <linux/pm_qos.h>
00023 #include <linux/inetdevice.h>
00024 #include <net/net_namespace.h>
00025 #include <net/cfg80211.h>
00026
00027 #include "ieee80211_i.h"
00028 #include "driver-ops.h"
00029 #include "rate.h"
00030 #include "mesh.h"
00031 #include "wep.h"
00032 #include "led.h"
00033 #include "cfg.h"
00034 #include "debugfs.h"
00035
00036 static struct lock_class_key ieee80211_rx_skb_queue_class;
00037
00038 void ieee80211_configure_filter(struct ieee80211_local *local)
00039 {
00040 u64 mc;
00041 unsigned int changed_flags;
00042 unsigned int new_flags = 0;
00043
00044 if (atomic_read(&local->iff_promiscs))
00045 new_flags |= FIF_PROMISC_IN_BSS;
00046
00047 if (atomic_read(&local->iff_allmultis))
00048 new_flags |= FIF_ALLMULTI;
00049
00050 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
00051 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
00052 new_flags |= FIF_BCN_PRBRESP_PROMISC;
00053
00054 if (local->fif_probe_req || local->probe_req_reg)
00055 new_flags |= FIF_PROBE_REQ;
00056
00057 if (local->fif_fcsfail)
00058 new_flags |= FIF_FCSFAIL;
00059
00060 if (local->fif_plcpfail)
00061 new_flags |= FIF_PLCPFAIL;
00062
00063 if (local->fif_control)
00064 new_flags |= FIF_CONTROL;
00065
00066 if (local->fif_other_bss)
00067 new_flags |= FIF_OTHER_BSS;
00068
00069 if (local->fif_pspoll)
00070 new_flags |= FIF_PSPOLL;
00071
00072 spin_lock_bh(&local->filter_lock);
00073 changed_flags = local->filter_flags ^ new_flags;
00074
00075 mc = drv_prepare_multicast(local, &local->mc_list);
00076 spin_unlock_bh(&local->filter_lock);
00077
00078
00079 new_flags |= (1<<31);
00080
00081 drv_configure_filter(local, changed_flags, &new_flags, mc);
00082
00083 WARN_ON(new_flags & (1<<31));
00084
00085 local->filter_flags = new_flags & ~(1<<31);
00086 }
00087
00088 static void ieee80211_reconfig_filter(struct work_struct *work)
00089 {
00090 struct ieee80211_local *local =
00091 container_of(work, struct ieee80211_local, reconfig_filter);
00092
00093 ieee80211_configure_filter(local);
00094 }
00095
00096 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
00097 {
00098 struct ieee80211_channel *chan;
00099 int ret = 0;
00100 int power;
00101 enum nl80211_channel_type channel_type;
00102 u32 offchannel_flag;
00103
00104 might_sleep();
00105
00106 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
00107 if (local->scan_channel) {
00108 chan = local->scan_channel;
00109
00110
00111
00112 if (chan == local->oper_channel)
00113 channel_type = local->_oper_channel_type;
00114 else
00115 channel_type = NL80211_CHAN_NO_HT;
00116 } else if (local->tmp_channel) {
00117 chan = local->tmp_channel;
00118 channel_type = local->tmp_channel_type;
00119 } else {
00120 chan = local->oper_channel;
00121 channel_type = local->_oper_channel_type;
00122 }
00123
00124 if (chan != local->oper_channel ||
00125 channel_type != local->_oper_channel_type)
00126 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
00127 else
00128 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
00129
00130 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
00131
00132 if (offchannel_flag || chan != local->hw.conf.channel ||
00133 channel_type != local->hw.conf.channel_type) {
00134 local->hw.conf.channel = chan;
00135 local->hw.conf.channel_type = channel_type;
00136 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
00137 }
00138
00139 if (!conf_is_ht(&local->hw.conf)) {
00140
00141
00142
00143
00144
00145 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
00146 } else if (local->hw.conf.smps_mode != local->smps_mode) {
00147 local->hw.conf.smps_mode = local->smps_mode;
00148 changed |= IEEE80211_CONF_CHANGE_SMPS;
00149 }
00150
00151 if (test_bit(SCAN_SW_SCANNING, &local->scanning) ||
00152 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) ||
00153 test_bit(SCAN_HW_SCANNING, &local->scanning))
00154 power = chan->max_power;
00155 else
00156 power = local->power_constr_level ?
00157 min(chan->max_power,
00158 (chan->max_reg_power - local->power_constr_level)) :
00159 chan->max_power;
00160
00161 if (local->user_power_level >= 0)
00162 power = min(power, local->user_power_level);
00163
00164 if (local->hw.conf.power_level != power) {
00165 changed |= IEEE80211_CONF_CHANGE_POWER;
00166 local->hw.conf.power_level = power;
00167 }
00168
00169 if (changed && local->open_count) {
00170 ret = drv_config(local, changed);
00171
00172
00173
00174
00175
00176
00177
00178
00179
00180
00181
00182
00183
00184
00185
00186 }
00187
00188 return ret;
00189 }
00190
00191 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
00192 u32 changed)
00193 {
00194 struct ieee80211_local *local = sdata->local;
00195 static const u8 zero[ETH_ALEN] = { 0 };
00196
00197 if (!changed)
00198 return;
00199
00200 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
00201 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
00202 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
00203 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
00204 else if (sdata->vif.type == NL80211_IFTYPE_AP)
00205 sdata->vif.bss_conf.bssid = sdata->vif.addr;
00206 else if (sdata->vif.type == NL80211_IFTYPE_WDS)
00207 sdata->vif.bss_conf.bssid = NULL;
00208 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
00209 sdata->vif.bss_conf.bssid = zero;
00210 } else {
00211 WARN_ON(1);
00212 return;
00213 }
00214
00215 switch (sdata->vif.type) {
00216 case NL80211_IFTYPE_AP:
00217 case NL80211_IFTYPE_ADHOC:
00218 case NL80211_IFTYPE_WDS:
00219 case NL80211_IFTYPE_MESH_POINT:
00220 break;
00221 default:
00222
00223 changed &= ~BSS_CHANGED_BEACON_ENABLED;
00224 if (WARN_ON(changed & BSS_CHANGED_BEACON))
00225 return;
00226 break;
00227 }
00228
00229 if (changed & BSS_CHANGED_BEACON_ENABLED) {
00230 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
00231 test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) {
00232 sdata->vif.bss_conf.enable_beacon = false;
00233 } else {
00234
00235
00236
00237
00238 switch (sdata->vif.type) {
00239 case NL80211_IFTYPE_AP:
00240 sdata->vif.bss_conf.enable_beacon =
00241 !!sdata->u.ap.beacon;
00242 break;
00243 case NL80211_IFTYPE_ADHOC:
00244 sdata->vif.bss_conf.enable_beacon =
00245 !!sdata->u.ibss.presp;
00246 break;
00247 #ifdef CONFIG_MAC80211_MESH
00248 case NL80211_IFTYPE_MESH_POINT:
00249 sdata->vif.bss_conf.enable_beacon =
00250 !!sdata->u.mesh.mesh_id_len;
00251 break;
00252 #endif
00253 default:
00254
00255 WARN_ON(1);
00256 break;
00257 }
00258 }
00259 }
00260
00261 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
00262 }
00263
00264 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
00265 {
00266 sdata->vif.bss_conf.use_cts_prot = false;
00267 sdata->vif.bss_conf.use_short_preamble = false;
00268 sdata->vif.bss_conf.use_short_slot = false;
00269 return BSS_CHANGED_ERP_CTS_PROT |
00270 BSS_CHANGED_ERP_PREAMBLE |
00271 BSS_CHANGED_ERP_SLOT;
00272 }
00273
00274 static void ieee80211_tasklet_handler(unsigned long data)
00275 {
00276 struct ieee80211_local *local = (struct ieee80211_local *) data;
00277 struct sta_info *sta, *tmp;
00278 struct skb_eosp_msg_data *eosp_data;
00279 struct sk_buff *skb;
00280
00281 while ((skb = skb_dequeue(&local->skb_queue)) ||
00282 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
00283 switch (skb->pkt_type) {
00284 case IEEE80211_RX_MSG:
00285
00286
00287 skb->pkt_type = 0;
00288 ieee80211_rx(&local->hw, skb);
00289 break;
00290 case IEEE80211_TX_STATUS_MSG:
00291 skb->pkt_type = 0;
00292 ieee80211_tx_status(&local->hw, skb);
00293 break;
00294 case IEEE80211_EOSP_MSG:
00295 eosp_data = (void *)skb->cb;
00296 for_each_sta_info(local, eosp_data->sta, sta, tmp) {
00297
00298 if (memcmp(eosp_data->iface,
00299 sta->sdata->vif.addr, ETH_ALEN))
00300 continue;
00301 clear_sta_flag(sta, WLAN_STA_SP);
00302 break;
00303 }
00304 dev_kfree_skb(skb);
00305 break;
00306 default:
00307 WARN(1, "mac80211: Packet is of unknown type %d\n",
00308 skb->pkt_type);
00309 dev_kfree_skb(skb);
00310 break;
00311 }
00312 }
00313 }
00314
00315 static void ieee80211_restart_work(struct work_struct *work)
00316 {
00317 struct ieee80211_local *local =
00318 container_of(work, struct ieee80211_local, restart_work);
00319
00320
00321 flush_workqueue(local->workqueue);
00322
00323 mutex_lock(&local->mtx);
00324 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
00325 local->sched_scanning,
00326 "%s called with hardware scan in progress\n", __func__);
00327 mutex_unlock(&local->mtx);
00328
00329 rtnl_lock();
00330 ieee80211_scan_cancel(local);
00331 ieee80211_reconfig(local);
00332 rtnl_unlock();
00333 }
00334
00335 void ieee80211_restart_hw(struct ieee80211_hw *hw)
00336 {
00337 struct ieee80211_local *local = hw_to_local(hw);
00338
00339 trace_api_restart_hw(local);
00340
00341 wiphy_info(hw->wiphy,
00342 "Hardware restart was requested\n");
00343
00344
00345 ieee80211_stop_queues_by_reason(hw,
00346 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
00347
00348 schedule_work(&local->restart_work);
00349 }
00350 EXPORT_SYMBOL(ieee80211_restart_hw);
00351
00352 static void ieee80211_recalc_smps_work(struct work_struct *work)
00353 {
00354 struct ieee80211_local *local =
00355 container_of(work, struct ieee80211_local, recalc_smps);
00356
00357 mutex_lock(&local->iflist_mtx);
00358 ieee80211_recalc_smps(local);
00359 mutex_unlock(&local->iflist_mtx);
00360 }
00361
00362 #ifdef CONFIG_INET
00363 static int ieee80211_ifa_changed(struct notifier_block *nb,
00364 unsigned long data, void *arg)
00365 {
00366 struct in_ifaddr *ifa = arg;
00367 struct ieee80211_local *local =
00368 container_of(nb, struct ieee80211_local,
00369 ifa_notifier);
00370 struct net_device *ndev = ifa->ifa_dev->dev;
00371 struct wireless_dev *wdev = ndev->ieee80211_ptr;
00372 struct in_device *idev;
00373 struct ieee80211_sub_if_data *sdata;
00374 struct ieee80211_bss_conf *bss_conf;
00375 struct ieee80211_if_managed *ifmgd;
00376 int c = 0;
00377
00378
00379 if (!wdev)
00380 return NOTIFY_DONE;
00381
00382 if (wdev->wiphy != local->hw.wiphy)
00383 return NOTIFY_DONE;
00384
00385 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
00386 bss_conf = &sdata->vif.bss_conf;
00387
00388
00389 if (sdata->vif.type != NL80211_IFTYPE_STATION)
00390 return NOTIFY_DONE;
00391
00392 idev = __in_dev_get_rtnl(sdata->dev);
00393 if (!idev)
00394 return NOTIFY_DONE;
00395
00396 ifmgd = &sdata->u.mgd;
00397 mutex_lock(&ifmgd->mtx);
00398
00399
00400 ifa = idev->ifa_list;
00401 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
00402 bss_conf->arp_addr_list[c] = ifa->ifa_address;
00403 ifa = ifa->ifa_next;
00404 c++;
00405 }
00406
00407
00408 if (ifa) {
00409 sdata->arp_filter_state = false;
00410 c = 0;
00411 } else {
00412 sdata->arp_filter_state = true;
00413 }
00414 bss_conf->arp_addr_cnt = c;
00415
00416
00417 if (ifmgd->associated) {
00418 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
00419 ieee80211_bss_info_change_notify(sdata,
00420 BSS_CHANGED_ARP_FILTER);
00421 }
00422
00423 mutex_unlock(&ifmgd->mtx);
00424
00425 return NOTIFY_DONE;
00426 }
00427 #endif
00428
00429 static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
00430 {
00431 struct ieee80211_local *local =
00432 container_of(napi, struct ieee80211_local, napi);
00433
00434 return local->ops->napi_poll(&local->hw, budget);
00435 }
00436
00437 void ieee80211_napi_schedule(struct ieee80211_hw *hw)
00438 {
00439 struct ieee80211_local *local = hw_to_local(hw);
00440
00441 napi_schedule(&local->napi);
00442 }
00443 EXPORT_SYMBOL(ieee80211_napi_schedule);
00444
00445 void ieee80211_napi_complete(struct ieee80211_hw *hw)
00446 {
00447 struct ieee80211_local *local = hw_to_local(hw);
00448
00449 napi_complete(&local->napi);
00450 }
00451 EXPORT_SYMBOL(ieee80211_napi_complete);
00452
00453
00454 static const struct ieee80211_txrx_stypes
00455 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
00456 [NL80211_IFTYPE_ADHOC] = {
00457 .tx = 0xffff,
00458 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
00459 },
00460 [NL80211_IFTYPE_STATION] = {
00461 .tx = 0xffff,
00462 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
00463 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
00464 },
00465 [NL80211_IFTYPE_AP] = {
00466 .tx = 0xffff,
00467 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
00468 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
00469 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
00470 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
00471 BIT(IEEE80211_STYPE_AUTH >> 4) |
00472 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
00473 BIT(IEEE80211_STYPE_ACTION >> 4),
00474 },
00475 [NL80211_IFTYPE_AP_VLAN] = {
00476
00477 .tx = 0xffff,
00478 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
00479 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
00480 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
00481 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
00482 BIT(IEEE80211_STYPE_AUTH >> 4) |
00483 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
00484 BIT(IEEE80211_STYPE_ACTION >> 4),
00485 },
00486 [NL80211_IFTYPE_P2P_CLIENT] = {
00487 .tx = 0xffff,
00488 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
00489 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
00490 },
00491 [NL80211_IFTYPE_P2P_GO] = {
00492 .tx = 0xffff,
00493 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
00494 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
00495 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
00496 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
00497 BIT(IEEE80211_STYPE_AUTH >> 4) |
00498 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
00499 BIT(IEEE80211_STYPE_ACTION >> 4),
00500 },
00501 [NL80211_IFTYPE_MESH_POINT] = {
00502 .tx = 0xffff,
00503 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
00504 BIT(IEEE80211_STYPE_AUTH >> 4) |
00505 BIT(IEEE80211_STYPE_DEAUTH >> 4),
00506 },
00507 };
00508
00509 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
00510 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
00511 IEEE80211_HT_AMPDU_PARM_DENSITY,
00512
00513 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
00514 IEEE80211_HT_CAP_MAX_AMSDU |
00515 IEEE80211_HT_CAP_SGI_40),
00516 .mcs = {
00517 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
00518 0xff, 0xff, 0xff, 0xff, 0xff, },
00519 },
00520 };
00521
00522 struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
00523 const struct ieee80211_ops *ops)
00524 {
00525 struct ieee80211_local *local;
00526 int priv_size, i;
00527 struct wiphy *wiphy;
00528
00529 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
00530 return NULL;
00531
00532 printk(KERN_ERR "*** MAC80211 for RT-WMP is loading...");
00533
00534
00535
00536
00537
00538
00539
00540
00541
00542
00543
00544
00545
00546
00547
00548 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
00549
00550 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
00551
00552 if (!wiphy)
00553 return NULL;
00554
00555 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
00556
00557 wiphy->privid = mac80211_wiphy_privid;
00558
00559 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
00560 WIPHY_FLAG_4ADDR_AP |
00561 WIPHY_FLAG_4ADDR_STATION |
00562 WIPHY_FLAG_REPORTS_OBSS |
00563 WIPHY_FLAG_OFFCHAN_TX;
00564
00565 if (ops->remain_on_channel)
00566 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
00567
00568 wiphy->features = NL80211_FEATURE_SK_TX_STATUS |
00569 NL80211_FEATURE_HT_IBSS;
00570
00571 if (!ops->set_key)
00572 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
00573
00574 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
00575
00576 local = wiphy_priv(wiphy);
00577
00578 local->hw.wiphy = wiphy;
00579
00580 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
00581
00582 BUG_ON(!ops->tx && !ops->tx_frags);
00583 BUG_ON(!ops->start);
00584 BUG_ON(!ops->stop);
00585 BUG_ON(!ops->config);
00586 BUG_ON(!ops->add_interface);
00587 BUG_ON(!ops->remove_interface);
00588 BUG_ON(!ops->configure_filter);
00589 local->ops = ops;
00590
00591
00592 local->hw.queues = 1;
00593 local->hw.max_rates = 1;
00594 local->hw.max_report_rates = 0;
00595 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
00596 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
00597 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
00598 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
00599 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
00600 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
00601 IEEE80211_RADIOTAP_MCS_HAVE_GI |
00602 IEEE80211_RADIOTAP_MCS_HAVE_BW;
00603 local->user_power_level = -1;
00604 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
00605
00606 INIT_LIST_HEAD(&local->interfaces);
00607
00608 __hw_addr_init(&local->mc_list);
00609
00610 mutex_init(&local->iflist_mtx);
00611 mutex_init(&local->mtx);
00612
00613 mutex_init(&local->key_mtx);
00614 spin_lock_init(&local->filter_lock);
00615 spin_lock_init(&local->queue_stop_reason_lock);
00616
00617
00618
00619
00620
00621
00622
00623
00624 skb_queue_head_init_class(&local->rx_skb_queue,
00625 &ieee80211_rx_skb_queue_class);
00626
00627 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
00628
00629 ieee80211_work_init(local);
00630
00631 INIT_WORK(&local->restart_work, ieee80211_restart_work);
00632
00633 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
00634 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
00635 local->smps_mode = IEEE80211_SMPS_OFF;
00636
00637 INIT_WORK(&local->dynamic_ps_enable_work,
00638 ieee80211_dynamic_ps_enable_work);
00639 INIT_WORK(&local->dynamic_ps_disable_work,
00640 ieee80211_dynamic_ps_disable_work);
00641 setup_timer(&local->dynamic_ps_timer,
00642 ieee80211_dynamic_ps_timer, (unsigned long) local);
00643
00644 INIT_WORK(&local->sched_scan_stopped_work,
00645 ieee80211_sched_scan_stopped_work);
00646
00647 spin_lock_init(&local->ack_status_lock);
00648 idr_init(&local->ack_status_frames);
00649
00650 idr_pre_get(&local->ack_status_frames, GFP_KERNEL);
00651
00652 sta_info_init(local);
00653
00654 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
00655 skb_queue_head_init(&local->pending[i]);
00656 atomic_set(&local->agg_queue_stop[i], 0);
00657 }
00658 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
00659 (unsigned long)local);
00660
00661 tasklet_init(&local->tasklet,
00662 ieee80211_tasklet_handler,
00663 (unsigned long) local);
00664
00665 skb_queue_head_init(&local->skb_queue);
00666 skb_queue_head_init(&local->skb_queue_unreliable);
00667
00668
00669 init_dummy_netdev(&local->napi_dev);
00670
00671 ieee80211_led_names(local);
00672
00673 ieee80211_hw_roc_setup(local);
00674
00675 return &local->hw;
00676 }
00677 EXPORT_SYMBOL(ieee80211_alloc_hw);
00678
00679 int ieee80211_register_hw(struct ieee80211_hw *hw)
00680 {
00681 struct ieee80211_local *local = hw_to_local(hw);
00682 int result, i;
00683 enum ieee80211_band band;
00684 int channels, max_bitrates;
00685 bool supp_ht;
00686 static const u32 cipher_suites[] = {
00687
00688 WLAN_CIPHER_SUITE_WEP40,
00689 WLAN_CIPHER_SUITE_WEP104,
00690 WLAN_CIPHER_SUITE_TKIP,
00691 WLAN_CIPHER_SUITE_CCMP,
00692
00693
00694 WLAN_CIPHER_SUITE_AES_CMAC
00695 };
00696
00697 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
00698 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
00699 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
00700 return -EINVAL;
00701
00702 if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns)
00703 #ifdef CONFIG_PM
00704 && (!local->ops->suspend || !local->ops->resume)
00705 #endif
00706 )
00707 return -EINVAL;
00708
00709 if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
00710 return -EINVAL;
00711
00712 if (hw->max_report_rates == 0)
00713 hw->max_report_rates = hw->max_rates;
00714
00715
00716
00717
00718
00719
00720 channels = 0;
00721 max_bitrates = 0;
00722 supp_ht = false;
00723 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
00724 struct ieee80211_supported_band *sband;
00725
00726 sband = local->hw.wiphy->bands[band];
00727 if (!sband)
00728 continue;
00729 if (!local->oper_channel) {
00730
00731 local->hw.conf.channel =
00732 local->oper_channel = &sband->channels[0];
00733 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
00734 }
00735 channels += sband->n_channels;
00736
00737 if (max_bitrates < sband->n_bitrates)
00738 max_bitrates = sband->n_bitrates;
00739 supp_ht = supp_ht || sband->ht_cap.ht_supported;
00740 }
00741
00742 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
00743 sizeof(void *) * channels, GFP_KERNEL);
00744 if (!local->int_scan_req)
00745 return -ENOMEM;
00746
00747 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
00748 if (!local->hw.wiphy->bands[band])
00749 continue;
00750 local->int_scan_req->rates[band] = (u32) -1;
00751 }
00752
00753
00754 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
00755 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
00756 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
00757 }
00758
00759
00760 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
00761 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
00762
00763
00764
00765
00766
00767 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
00768 const struct ieee80211_iface_combination *c;
00769 int j;
00770
00771 c = &hw->wiphy->iface_combinations[i];
00772
00773 if (c->num_different_channels > 1)
00774 return -EINVAL;
00775
00776 for (j = 0; j < c->n_limits; j++)
00777 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
00778 c->limits[j].max > 1)
00779 return -EINVAL;
00780 }
00781
00782 #ifndef CONFIG_MAC80211_MESH
00783
00784 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
00785 #endif
00786
00787
00788
00789 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
00790 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
00791
00792
00793 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
00794
00795 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
00796 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
00797 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
00798 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
00799
00800 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
00801 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
00802 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
00803
00804
00805
00806
00807
00808
00809
00810 local->scan_ies_len = 4 + max_bitrates +
00811 3 ;
00812 if (supp_ht)
00813 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
00814
00815 if (!local->ops->hw_scan) {
00816
00817 local->hw.wiphy->max_scan_ssids = 4;
00818 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
00819 }
00820
00821
00822
00823
00824
00825
00826
00827
00828 if (local->hw.wiphy->max_scan_ie_len)
00829 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
00830
00831
00832 if (!local->hw.wiphy->cipher_suites) {
00833 local->hw.wiphy->cipher_suites = cipher_suites;
00834 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
00835 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
00836 local->hw.wiphy->n_cipher_suites--;
00837 }
00838 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
00839 if (local->hw.wiphy->cipher_suites == cipher_suites) {
00840 local->hw.wiphy->cipher_suites += 2;
00841 local->hw.wiphy->n_cipher_suites -= 2;
00842 } else {
00843 u32 *suites;
00844 int r, w = 0;
00845
00846
00847
00848 suites = kmemdup(
00849 local->hw.wiphy->cipher_suites,
00850 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
00851 GFP_KERNEL);
00852 if (!suites)
00853 return -ENOMEM;
00854 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
00855 u32 suite = local->hw.wiphy->cipher_suites[r];
00856 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
00857 suite == WLAN_CIPHER_SUITE_WEP104)
00858 continue;
00859 suites[w++] = suite;
00860 }
00861 local->hw.wiphy->cipher_suites = suites;
00862 local->hw.wiphy->n_cipher_suites = w;
00863 local->wiphy_ciphers_allocated = true;
00864 }
00865 }
00866
00867 if (!local->ops->remain_on_channel)
00868 local->hw.wiphy->max_remain_on_channel_duration = 5000;
00869
00870 if (local->ops->sched_scan_start)
00871 local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
00872
00873
00874 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
00875 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
00876
00877 result = wiphy_register(local->hw.wiphy);
00878 if (result < 0)
00879 goto fail_wiphy_register;
00880
00881
00882
00883
00884
00885 if (hw->queues > IEEE80211_MAX_QUEUES)
00886 hw->queues = IEEE80211_MAX_QUEUES;
00887
00888 local->workqueue =
00889 alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
00890 if (!local->workqueue) {
00891 result = -ENOMEM;
00892 goto fail_workqueue;
00893 }
00894
00895
00896
00897
00898
00899
00900 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
00901 IEEE80211_TX_STATUS_HEADROOM);
00902
00903 debugfs_hw_add(local);
00904
00905
00906
00907
00908
00909 if (local->hw.max_listen_interval == 0)
00910 local->hw.max_listen_interval = 5;
00911
00912 local->hw.conf.listen_interval = local->hw.max_listen_interval;
00913
00914 local->dynamic_ps_forced_timeout = -1;
00915
00916 result = ieee80211_wep_init(local);
00917 if (result < 0)
00918 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
00919 result);
00920
00921 ieee80211_led_init(local);
00922
00923 rtnl_lock();
00924
00925 result = ieee80211_init_rate_ctrl_alg(local,
00926 hw->rate_control_algorithm);
00927 if (result < 0) {
00928 wiphy_debug(local->hw.wiphy,
00929 "Failed to initialize rate control algorithm\n");
00930 goto fail_rate;
00931 }
00932
00933
00934 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
00935 result = ieee80211_if_add(local, "wlan%d", NULL,
00936 NL80211_IFTYPE_STATION, NULL);
00937 if (result)
00938 wiphy_warn(local->hw.wiphy,
00939 "Failed to add default virtual iface\n");
00940 }
00941
00942 rtnl_unlock();
00943
00944 local->network_latency_notifier.notifier_call =
00945 ieee80211_max_network_latency;
00946 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
00947 &local->network_latency_notifier);
00948 if (result) {
00949 rtnl_lock();
00950 goto fail_pm_qos;
00951 }
00952
00953 #ifdef CONFIG_INET
00954 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
00955 result = register_inetaddr_notifier(&local->ifa_notifier);
00956 if (result)
00957 goto fail_ifa;
00958 #endif
00959
00960 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
00961 local->hw.napi_weight);
00962
00963 return 0;
00964
00965 #ifdef CONFIG_INET
00966 fail_ifa:
00967 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
00968 &local->network_latency_notifier);
00969 rtnl_lock();
00970 #endif
00971 fail_pm_qos:
00972 ieee80211_led_exit(local);
00973 ieee80211_remove_interfaces(local);
00974 fail_rate:
00975 rtnl_unlock();
00976 ieee80211_wep_free(local);
00977 sta_info_stop(local);
00978 destroy_workqueue(local->workqueue);
00979 fail_workqueue:
00980 wiphy_unregister(local->hw.wiphy);
00981 fail_wiphy_register:
00982 if (local->wiphy_ciphers_allocated)
00983 kfree(local->hw.wiphy->cipher_suites);
00984 kfree(local->int_scan_req);
00985 return result;
00986 }
00987 EXPORT_SYMBOL(ieee80211_register_hw);
00988
00989 void ieee80211_unregister_hw(struct ieee80211_hw *hw)
00990 {
00991 struct ieee80211_local *local = hw_to_local(hw);
00992
00993 tasklet_kill(&local->tx_pending_tasklet);
00994 tasklet_kill(&local->tasklet);
00995
00996 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
00997 &local->network_latency_notifier);
00998 #ifdef CONFIG_INET
00999 unregister_inetaddr_notifier(&local->ifa_notifier);
01000 #endif
01001
01002 rtnl_lock();
01003
01004
01005
01006
01007
01008
01009 ieee80211_remove_interfaces(local);
01010
01011 rtnl_unlock();
01012
01013
01014
01015
01016
01017 del_timer_sync(&local->work_timer);
01018
01019 cancel_work_sync(&local->restart_work);
01020 cancel_work_sync(&local->reconfig_filter);
01021
01022 ieee80211_clear_tx_pending(local);
01023 rate_control_deinitialize(local);
01024
01025 if (skb_queue_len(&local->skb_queue) ||
01026 skb_queue_len(&local->skb_queue_unreliable))
01027 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
01028 skb_queue_purge(&local->skb_queue);
01029 skb_queue_purge(&local->skb_queue_unreliable);
01030 skb_queue_purge(&local->rx_skb_queue);
01031
01032 destroy_workqueue(local->workqueue);
01033 wiphy_unregister(local->hw.wiphy);
01034 sta_info_stop(local);
01035 ieee80211_wep_free(local);
01036 ieee80211_led_exit(local);
01037 kfree(local->int_scan_req);
01038 }
01039 EXPORT_SYMBOL(ieee80211_unregister_hw);
01040
01041 static int ieee80211_free_ack_frame(int id, void *p, void *data)
01042 {
01043 WARN_ONCE(1, "Have pending ack frames!\n");
01044 kfree_skb(p);
01045 return 0;
01046 }
01047
01048 void ieee80211_free_hw(struct ieee80211_hw *hw)
01049 {
01050 struct ieee80211_local *local = hw_to_local(hw);
01051
01052 mutex_destroy(&local->iflist_mtx);
01053 mutex_destroy(&local->mtx);
01054
01055 if (local->wiphy_ciphers_allocated)
01056 kfree(local->hw.wiphy->cipher_suites);
01057
01058 idr_for_each(&local->ack_status_frames,
01059 ieee80211_free_ack_frame, NULL);
01060 idr_destroy(&local->ack_status_frames);
01061
01062 wiphy_free(local->hw.wiphy);
01063 }
01064 EXPORT_SYMBOL(ieee80211_free_hw);
01065
01066 static int __init ieee80211_init(void)
01067 {
01068 struct sk_buff *skb;
01069 int ret;
01070
01071 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
01072 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
01073 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
01074
01075 ret = rc80211_minstrel_init();
01076 if (ret)
01077 return ret;
01078
01079 ret = rc80211_minstrel_ht_init();
01080 if (ret)
01081 goto err_minstrel;
01082
01083 ret = rc80211_pid_init();
01084 if (ret)
01085 goto err_pid;
01086
01087 ret = ieee80211_iface_init();
01088 if (ret)
01089 goto err_netdev;
01090
01091 return 0;
01092 err_netdev:
01093 rc80211_pid_exit();
01094 err_pid:
01095 rc80211_minstrel_ht_exit();
01096 err_minstrel:
01097 rc80211_minstrel_exit();
01098
01099 return ret;
01100 }
01101
01102 static void __exit ieee80211_exit(void)
01103 {
01104 rc80211_pid_exit();
01105 rc80211_minstrel_ht_exit();
01106 rc80211_minstrel_exit();
01107
01108 if (mesh_allocated)
01109 ieee80211s_stop();
01110
01111 ieee80211_iface_exit();
01112
01113 rcu_barrier();
01114 }
01115
01116
01117 subsys_initcall(ieee80211_init);
01118 module_exit(ieee80211_exit);
01119
01120 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
01121 MODULE_LICENSE("GPL");