Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 2 | * Interface handling (except master interface) |
| 3 | * |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 5 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 6 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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 | */ |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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> |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 19 | #include <net/ieee80211_radiotap.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 20 | #include "ieee80211_i.h" |
| 21 | #include "sta_info.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 22 | #include "debugfs_netdev.h" |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 23 | #include "mesh.h" |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 24 | #include "led.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 25 | #include "driver-ops.h" |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 26 | #include "wme.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 27 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 28 | /** |
| 29 | * DOC: Interface list locking |
| 30 | * |
| 31 | * The interface list in each struct ieee80211_local is protected |
| 32 | * three-fold: |
| 33 | * |
| 34 | * (1) modifications may only be done under the RTNL |
| 35 | * (2) modifications and readers are protected against each other by |
| 36 | * the iflist_mtx. |
| 37 | * (3) modifications are done in an RCU manner so atomic readers |
| 38 | * can traverse the list in RCU-safe blocks. |
| 39 | * |
| 40 | * As a consequence, reads (traversals) of the list can be protected |
| 41 | * by either the RTNL, the iflist_mtx or RCU. |
| 42 | */ |
| 43 | |
| 44 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 45 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
| 46 | { |
| 47 | int meshhdrlen; |
| 48 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 49 | |
| 50 | meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0; |
| 51 | |
| 52 | /* FIX: what would be proper limits for MTU? |
| 53 | * This interface uses 802.3 frames. */ |
| 54 | if (new_mtu < 256 || |
| 55 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { |
| 56 | return -EINVAL; |
| 57 | } |
| 58 | |
| 59 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 60 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); |
| 61 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ |
| 62 | dev->mtu = new_mtu; |
| 63 | return 0; |
| 64 | } |
| 65 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 66 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
| 67 | { |
| 68 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 69 | struct sockaddr *sa = addr; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 70 | int ret; |
| 71 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 72 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 73 | return -EBUSY; |
| 74 | |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 75 | ret = eth_mac_addr(dev, sa); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 76 | |
| 77 | if (ret == 0) |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 78 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 79 | |
| 80 | return ret; |
| 81 | } |
| 82 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 83 | static inline int identical_mac_addr_allowed(int type1, int type2) |
| 84 | { |
| 85 | return type1 == NL80211_IFTYPE_MONITOR || |
| 86 | type2 == NL80211_IFTYPE_MONITOR || |
| 87 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
| 88 | (type1 == NL80211_IFTYPE_WDS && |
| 89 | (type2 == NL80211_IFTYPE_WDS || |
| 90 | type2 == NL80211_IFTYPE_AP)) || |
| 91 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || |
| 92 | (type1 == NL80211_IFTYPE_AP_VLAN && |
| 93 | (type2 == NL80211_IFTYPE_AP || |
| 94 | type2 == NL80211_IFTYPE_AP_VLAN)); |
| 95 | } |
| 96 | |
| 97 | static int ieee80211_open(struct net_device *dev) |
| 98 | { |
Johannes Berg | b4a4bf5 | 2008-09-26 13:34:54 +0200 | [diff] [blame] | 99 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 100 | struct ieee80211_sub_if_data *nsdata; |
| 101 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 102 | struct sta_info *sta; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 103 | u32 changed = 0; |
| 104 | int res; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 105 | u32 hw_reconf_flags = 0; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 106 | u8 null_addr[ETH_ALEN] = {0}; |
| 107 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 108 | /* fail early if user set an invalid address */ |
| 109 | if (compare_ether_addr(dev->dev_addr, null_addr) && |
| 110 | !is_valid_ether_addr(dev->dev_addr)) |
| 111 | return -EADDRNOTAVAIL; |
| 112 | |
| 113 | /* we hold the RTNL here so can safely walk the list */ |
| 114 | list_for_each_entry(nsdata, &local->interfaces, list) { |
| 115 | struct net_device *ndev = nsdata->dev; |
| 116 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 117 | if (ndev != dev && ieee80211_sdata_running(nsdata)) { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 118 | /* |
| 119 | * Allow only a single IBSS interface to be up at any |
| 120 | * time. This is restricted because beacon distribution |
| 121 | * cannot work properly if both are in the same IBSS. |
| 122 | * |
| 123 | * To remove this restriction we'd have to disallow them |
| 124 | * from setting the same SSID on different IBSS interfaces |
| 125 | * belonging to the same hardware. Then, however, we're |
| 126 | * faced with having to adopt two different TSF timers... |
| 127 | */ |
| 128 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && |
| 129 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
| 130 | return -EBUSY; |
| 131 | |
| 132 | /* |
| 133 | * The remaining checks are only performed for interfaces |
| 134 | * with the same MAC address. |
| 135 | */ |
| 136 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) |
| 137 | continue; |
| 138 | |
| 139 | /* |
| 140 | * check whether it may have the same address |
| 141 | */ |
| 142 | if (!identical_mac_addr_allowed(sdata->vif.type, |
| 143 | nsdata->vif.type)) |
| 144 | return -ENOTUNIQ; |
| 145 | |
| 146 | /* |
| 147 | * can only add VLANs to enabled APs |
| 148 | */ |
| 149 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
| 150 | nsdata->vif.type == NL80211_IFTYPE_AP) |
| 151 | sdata->bss = &nsdata->u.ap; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | switch (sdata->vif.type) { |
| 156 | case NL80211_IFTYPE_WDS: |
| 157 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
| 158 | return -ENOLINK; |
| 159 | break; |
| 160 | case NL80211_IFTYPE_AP_VLAN: |
| 161 | if (!sdata->bss) |
| 162 | return -ENOLINK; |
| 163 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
| 164 | break; |
| 165 | case NL80211_IFTYPE_AP: |
| 166 | sdata->bss = &sdata->u.ap; |
| 167 | break; |
| 168 | case NL80211_IFTYPE_MESH_POINT: |
| 169 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
| 170 | break; |
| 171 | /* mesh ifaces must set allmulti to forward mcast traffic */ |
| 172 | atomic_inc(&local->iff_allmultis); |
| 173 | break; |
| 174 | case NL80211_IFTYPE_STATION: |
| 175 | case NL80211_IFTYPE_MONITOR: |
| 176 | case NL80211_IFTYPE_ADHOC: |
| 177 | /* no special treatment */ |
| 178 | break; |
| 179 | case NL80211_IFTYPE_UNSPECIFIED: |
| 180 | case __NL80211_IFTYPE_AFTER_LAST: |
| 181 | /* cannot happen */ |
| 182 | WARN_ON(1); |
| 183 | break; |
| 184 | } |
| 185 | |
| 186 | if (local->open_count == 0) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 187 | res = drv_start(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 188 | if (res) |
| 189 | goto err_del_bss; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 190 | /* we're brought up, everything changes */ |
| 191 | hw_reconf_flags = ~0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 192 | ieee80211_led_radio(local, true); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | /* |
| 196 | * Check all interfaces and copy the hopefully now-present |
| 197 | * MAC address to those that have the special null one. |
| 198 | */ |
| 199 | list_for_each_entry(nsdata, &local->interfaces, list) { |
| 200 | struct net_device *ndev = nsdata->dev; |
| 201 | |
| 202 | /* |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 203 | * No need to check running since we do not allow |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 204 | * it to start up with this invalid address. |
| 205 | */ |
John W. Linville | 0adc23f | 2009-10-06 16:27:18 -0400 | [diff] [blame] | 206 | if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 207 | memcpy(ndev->dev_addr, |
| 208 | local->hw.wiphy->perm_addr, |
| 209 | ETH_ALEN); |
John W. Linville | 0adc23f | 2009-10-06 16:27:18 -0400 | [diff] [blame] | 210 | memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN); |
| 211 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 212 | } |
| 213 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 214 | /* |
| 215 | * Validate the MAC address for this device. |
| 216 | */ |
| 217 | if (!is_valid_ether_addr(dev->dev_addr)) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 218 | if (!local->open_count) |
| 219 | drv_stop(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 220 | return -EADDRNOTAVAIL; |
| 221 | } |
| 222 | |
| 223 | switch (sdata->vif.type) { |
| 224 | case NL80211_IFTYPE_AP_VLAN: |
| 225 | /* no need to tell driver */ |
| 226 | break; |
| 227 | case NL80211_IFTYPE_MONITOR: |
| 228 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 229 | local->cooked_mntrs++; |
| 230 | break; |
| 231 | } |
| 232 | |
| 233 | /* must be before the call to ieee80211_configure_filter */ |
| 234 | local->monitors++; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 235 | if (local->monitors == 1) { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 236 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
| 237 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 238 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 239 | |
| 240 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) |
| 241 | local->fif_fcsfail++; |
| 242 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) |
| 243 | local->fif_plcpfail++; |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 244 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 245 | local->fif_control++; |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 246 | local->fif_pspoll++; |
| 247 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 248 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) |
| 249 | local->fif_other_bss++; |
| 250 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 251 | ieee80211_configure_filter(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 252 | break; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 253 | default: |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 254 | res = drv_add_interface(local, &sdata->vif); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 255 | if (res) |
| 256 | goto err_stop; |
| 257 | |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 258 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 259 | local->fif_other_bss++; |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 260 | ieee80211_configure_filter(local); |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 261 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 262 | ieee80211_start_mesh(sdata); |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 263 | } else if (sdata->vif.type == NL80211_IFTYPE_AP) { |
| 264 | local->fif_pspoll++; |
| 265 | |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 266 | ieee80211_configure_filter(local); |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 267 | } |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 268 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 269 | changed |= ieee80211_reset_erp_info(sdata); |
| 270 | ieee80211_bss_info_change_notify(sdata, changed); |
| 271 | ieee80211_enable_keys(sdata); |
| 272 | |
Johannes Berg | 7986cf9 | 2009-03-21 17:08:43 +0100 | [diff] [blame] | 273 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 274 | netif_carrier_off(dev); |
| 275 | else |
| 276 | netif_carrier_on(dev); |
| 277 | } |
| 278 | |
| 279 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
| 280 | /* Create STA entry for the WDS peer */ |
| 281 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, |
| 282 | GFP_KERNEL); |
| 283 | if (!sta) { |
| 284 | res = -ENOMEM; |
| 285 | goto err_del_interface; |
| 286 | } |
| 287 | |
| 288 | /* no locking required since STA is not live yet */ |
| 289 | sta->flags |= WLAN_STA_AUTHORIZED; |
| 290 | |
| 291 | res = sta_info_insert(sta); |
| 292 | if (res) { |
| 293 | /* STA has been freed */ |
| 294 | goto err_del_interface; |
| 295 | } |
| 296 | } |
| 297 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 298 | /* |
| 299 | * set_multicast_list will be invoked by the networking core |
| 300 | * which will check whether any increments here were done in |
| 301 | * error and sync them down to the hardware as filter flags. |
| 302 | */ |
| 303 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 304 | atomic_inc(&local->iff_allmultis); |
| 305 | |
| 306 | if (sdata->flags & IEEE80211_SDATA_PROMISC) |
| 307 | atomic_inc(&local->iff_promiscs); |
| 308 | |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 309 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
| 310 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 311 | local->open_count++; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 312 | if (hw_reconf_flags) { |
| 313 | ieee80211_hw_config(local, hw_reconf_flags); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 314 | /* |
| 315 | * set default queue parameters so drivers don't |
| 316 | * need to initialise the hardware if the hardware |
| 317 | * doesn't start up with sane defaults |
| 318 | */ |
| 319 | ieee80211_set_wmm_default(sdata); |
| 320 | } |
| 321 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 322 | ieee80211_recalc_ps(local, -1); |
Johannes Berg | 965beda | 2009-04-16 13:17:24 +0200 | [diff] [blame] | 323 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 324 | /* |
| 325 | * ieee80211_sta_work is disabled while network interface |
| 326 | * is down. Therefore, some configuration changes may not |
| 327 | * yet be effective. Trigger execution of ieee80211_sta_work |
| 328 | * to fix this. |
| 329 | */ |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 330 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 331 | ieee80211_queue_work(&local->hw, &sdata->u.mgd.work); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 332 | |
John W. Linville | 8a5b33f | 2010-01-06 15:39:39 -0500 | [diff] [blame] | 333 | netif_tx_start_all_queues(dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 334 | |
| 335 | return 0; |
| 336 | err_del_interface: |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 337 | drv_remove_interface(local, &sdata->vif); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 338 | err_stop: |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 339 | if (!local->open_count) |
| 340 | drv_stop(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 341 | err_del_bss: |
| 342 | sdata->bss = NULL; |
| 343 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| 344 | list_del(&sdata->u.vlan.list); |
| 345 | return res; |
| 346 | } |
| 347 | |
| 348 | static int ieee80211_stop(struct net_device *dev) |
| 349 | { |
| 350 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 351 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 352 | struct sta_info *sta; |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 353 | unsigned long flags; |
| 354 | struct sk_buff *skb, *tmp; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 355 | u32 hw_reconf_flags = 0; |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 356 | int i; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 357 | |
| 358 | /* |
| 359 | * Stop TX on this interface first. |
| 360 | */ |
John W. Linville | 8a5b33f | 2010-01-06 15:39:39 -0500 | [diff] [blame] | 361 | netif_tx_stop_all_queues(dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 362 | |
| 363 | /* |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 364 | * Purge work for this interface. |
| 365 | */ |
| 366 | ieee80211_work_purge(sdata); |
| 367 | |
| 368 | /* |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 369 | * Now delete all active aggregation sessions. |
| 370 | */ |
| 371 | rcu_read_lock(); |
| 372 | |
| 373 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 374 | if (sta->sdata == sdata) |
Johannes Berg | 2dace10 | 2009-02-10 21:25:52 +0100 | [diff] [blame] | 375 | ieee80211_sta_tear_down_BA_sessions(sta); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | rcu_read_unlock(); |
| 379 | |
| 380 | /* |
| 381 | * Remove all stations associated with this interface. |
| 382 | * |
| 383 | * This must be done before calling ops->remove_interface() |
| 384 | * because otherwise we can later invoke ops->sta_notify() |
| 385 | * whenever the STAs are removed, and that invalidates driver |
| 386 | * assumptions about always getting a vif pointer that is valid |
| 387 | * (because if we remove a STA after ops->remove_interface() |
| 388 | * the driver will have removed the vif info already!) |
| 389 | * |
| 390 | * We could relax this and only unlink the stations from the |
| 391 | * hash table and list but keep them on a per-sdata list that |
| 392 | * will be inserted back again when the interface is brought |
| 393 | * up again, but I don't currently see a use case for that, |
| 394 | * except with WDS which gets a STA entry created when it is |
| 395 | * brought up. |
| 396 | */ |
| 397 | sta_info_flush(local, sdata); |
| 398 | |
| 399 | /* |
| 400 | * Don't count this interface for promisc/allmulti while it |
| 401 | * is down. dev_mc_unsync() will invoke set_multicast_list |
| 402 | * on the master interface which will sync these down to the |
| 403 | * hardware as filter flags. |
| 404 | */ |
| 405 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 406 | atomic_dec(&local->iff_allmultis); |
| 407 | |
| 408 | if (sdata->flags & IEEE80211_SDATA_PROMISC) |
| 409 | atomic_dec(&local->iff_promiscs); |
| 410 | |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 411 | if (sdata->vif.type == NL80211_IFTYPE_AP) |
| 412 | local->fif_pspoll--; |
| 413 | |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 414 | netif_addr_lock_bh(dev); |
| 415 | spin_lock_bh(&local->filter_lock); |
| 416 | __dev_addr_unsync(&local->mc_list, &local->mc_count, |
| 417 | &dev->mc_list, &dev->mc_count); |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 418 | spin_unlock_bh(&local->filter_lock); |
| 419 | netif_addr_unlock_bh(dev); |
| 420 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 421 | ieee80211_configure_filter(local); |
| 422 | |
Vivek Natarajan | 7cbf0ba | 2008-12-24 00:34:37 -0800 | [diff] [blame] | 423 | del_timer_sync(&local->dynamic_ps_timer); |
| 424 | cancel_work_sync(&local->dynamic_ps_enable_work); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 425 | |
| 426 | /* APs need special treatment */ |
| 427 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Johannes Berg | 57c9fff | 2009-07-29 15:46:21 +0200 | [diff] [blame] | 428 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 429 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
| 430 | |
| 431 | /* remove beacon */ |
| 432 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); |
| 433 | synchronize_rcu(); |
| 434 | kfree(old_beacon); |
| 435 | |
| 436 | /* down all dependent devices, that is VLANs */ |
Johannes Berg | 57c9fff | 2009-07-29 15:46:21 +0200 | [diff] [blame] | 437 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 438 | u.vlan.list) |
| 439 | dev_close(vlan->dev); |
| 440 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); |
| 441 | } |
| 442 | |
| 443 | local->open_count--; |
| 444 | |
| 445 | switch (sdata->vif.type) { |
| 446 | case NL80211_IFTYPE_AP_VLAN: |
| 447 | list_del(&sdata->u.vlan.list); |
| 448 | /* no need to tell driver */ |
| 449 | break; |
| 450 | case NL80211_IFTYPE_MONITOR: |
| 451 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 452 | local->cooked_mntrs--; |
| 453 | break; |
| 454 | } |
| 455 | |
| 456 | local->monitors--; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 457 | if (local->monitors == 0) { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 458 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
| 459 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 460 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 461 | |
| 462 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) |
| 463 | local->fif_fcsfail--; |
| 464 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) |
| 465 | local->fif_plcpfail--; |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 466 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) { |
| 467 | local->fif_pspoll--; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 468 | local->fif_control--; |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 469 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 470 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) |
| 471 | local->fif_other_bss--; |
| 472 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 473 | ieee80211_configure_filter(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 474 | break; |
| 475 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 476 | del_timer_sync(&sdata->u.mgd.chswitch_timer); |
| 477 | del_timer_sync(&sdata->u.mgd.timer); |
Johannes Berg | 0e2b628 | 2009-07-13 13:23:39 +0200 | [diff] [blame] | 478 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
| 479 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 480 | /* |
Johannes Berg | 0e2b628 | 2009-07-13 13:23:39 +0200 | [diff] [blame] | 481 | * If any of the timers fired while we waited for it, it will |
| 482 | * have queued its work. Now the work will be running again |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 483 | * but will not rearm the timer again because it checks |
| 484 | * whether the interface is running, which, at this point, |
| 485 | * it no longer is. |
| 486 | */ |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 487 | cancel_work_sync(&sdata->u.mgd.work); |
| 488 | cancel_work_sync(&sdata->u.mgd.chswitch_work); |
Johannes Berg | 0e2b628 | 2009-07-13 13:23:39 +0200 | [diff] [blame] | 489 | cancel_work_sync(&sdata->u.mgd.monitor_work); |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 490 | cancel_work_sync(&sdata->u.mgd.beacon_loss_work); |
| 491 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 492 | /* |
| 493 | * When we get here, the interface is marked down. |
| 494 | * Call synchronize_rcu() to wait for the RX path |
| 495 | * should it be using the interface and enqueuing |
| 496 | * frames at this very time on another CPU. |
| 497 | */ |
| 498 | synchronize_rcu(); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 499 | skb_queue_purge(&sdata->u.mgd.skb_queue); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 500 | /* fall through */ |
| 501 | case NL80211_IFTYPE_ADHOC: |
| 502 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 503 | del_timer_sync(&sdata->u.ibss.timer); |
| 504 | cancel_work_sync(&sdata->u.ibss.work); |
| 505 | synchronize_rcu(); |
| 506 | skb_queue_purge(&sdata->u.ibss.skb_queue); |
| 507 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 508 | /* fall through */ |
| 509 | case NL80211_IFTYPE_MESH_POINT: |
| 510 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 511 | /* other_bss and allmulti are always set on mesh |
| 512 | * ifaces */ |
| 513 | local->fif_other_bss--; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 514 | atomic_dec(&local->iff_allmultis); |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 515 | |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 516 | ieee80211_configure_filter(local); |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 517 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 518 | ieee80211_stop_mesh(sdata); |
| 519 | } |
| 520 | /* fall through */ |
| 521 | default: |
Johannes Berg | 15db0b7 | 2009-08-25 16:33:47 +0200 | [diff] [blame] | 522 | if (local->scan_sdata == sdata) |
| 523 | ieee80211_scan_cancel(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 524 | |
Bob Copeland | 97af743 | 2009-07-29 10:13:03 +0200 | [diff] [blame] | 525 | /* |
| 526 | * Disable beaconing for AP and mesh, IBSS can't |
| 527 | * still be joined to a network at this point. |
| 528 | */ |
| 529 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
| 530 | sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { |
| 531 | ieee80211_bss_info_change_notify(sdata, |
| 532 | BSS_CHANGED_BEACON_ENABLED); |
| 533 | } |
| 534 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 535 | /* disable all keys for as long as this netdev is down */ |
| 536 | ieee80211_disable_keys(sdata); |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 537 | drv_remove_interface(local, &sdata->vif); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | sdata->bss = NULL; |
| 541 | |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 542 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
| 543 | |
| 544 | ieee80211_recalc_ps(local, -1); |
| 545 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 546 | if (local->open_count == 0) { |
Johannes Berg | ea77f12 | 2009-08-21 14:44:45 +0200 | [diff] [blame] | 547 | ieee80211_clear_tx_pending(local); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 548 | ieee80211_stop_device(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 549 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 550 | /* no reconfiguring after stop! */ |
| 551 | hw_reconf_flags = 0; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 552 | } |
| 553 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 554 | /* do after stop to avoid reconfiguring when we stop anyway */ |
| 555 | if (hw_reconf_flags) |
| 556 | ieee80211_hw_config(local, hw_reconf_flags); |
| 557 | |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 558 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 559 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
| 560 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { |
| 561 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 562 | if (info->control.vif == &sdata->vif) { |
| 563 | __skb_unlink(skb, &local->pending[i]); |
| 564 | dev_kfree_skb_irq(skb); |
| 565 | } |
| 566 | } |
| 567 | } |
| 568 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 569 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 570 | return 0; |
| 571 | } |
| 572 | |
| 573 | static void ieee80211_set_multicast_list(struct net_device *dev) |
| 574 | { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 575 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | b4a4bf5 | 2008-09-26 13:34:54 +0200 | [diff] [blame] | 576 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 577 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
| 578 | |
| 579 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
| 580 | promisc = !!(dev->flags & IFF_PROMISC); |
| 581 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
| 582 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); |
| 583 | |
| 584 | if (allmulti != sdata_allmulti) { |
| 585 | if (dev->flags & IFF_ALLMULTI) |
| 586 | atomic_inc(&local->iff_allmultis); |
| 587 | else |
| 588 | atomic_dec(&local->iff_allmultis); |
| 589 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
| 590 | } |
| 591 | |
| 592 | if (promisc != sdata_promisc) { |
| 593 | if (dev->flags & IFF_PROMISC) |
| 594 | atomic_inc(&local->iff_promiscs); |
| 595 | else |
| 596 | atomic_dec(&local->iff_promiscs); |
| 597 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
| 598 | } |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 599 | spin_lock_bh(&local->filter_lock); |
| 600 | __dev_addr_sync(&local->mc_list, &local->mc_count, |
| 601 | &dev->mc_list, &dev->mc_count); |
Johannes Berg | 3b8d81e | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 602 | spin_unlock_bh(&local->filter_lock); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 603 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 604 | } |
| 605 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 606 | /* |
| 607 | * Called when the netdev is removed or, by the code below, before |
| 608 | * the interface type changes. |
| 609 | */ |
| 610 | static void ieee80211_teardown_sdata(struct net_device *dev) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 611 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 612 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 613 | struct ieee80211_local *local = sdata->local; |
| 614 | struct beacon_data *beacon; |
| 615 | struct sk_buff *skb; |
| 616 | int flushed; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 617 | int i; |
| 618 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 619 | /* free extra data */ |
| 620 | ieee80211_free_keys(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 621 | |
Jouni Malinen | aee14ce | 2008-09-09 16:33:15 +0200 | [diff] [blame] | 622 | ieee80211_debugfs_remove_netdev(sdata); |
| 623 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 624 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 625 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 626 | sdata->fragment_next = 0; |
| 627 | |
| 628 | switch (sdata->vif.type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 629 | case NL80211_IFTYPE_AP: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 630 | beacon = sdata->u.ap.beacon; |
| 631 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); |
| 632 | synchronize_rcu(); |
| 633 | kfree(beacon); |
| 634 | |
| 635 | while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) { |
| 636 | local->total_ps_buffered--; |
| 637 | dev_kfree_skb(skb); |
| 638 | } |
| 639 | |
| 640 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 641 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 642 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 643 | mesh_rmc_free(sdata); |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 644 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 645 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | af8cdcd | 2009-04-19 21:25:43 +0200 | [diff] [blame] | 646 | if (WARN_ON(sdata->u.ibss.presp)) |
| 647 | kfree_skb(sdata->u.ibss.presp); |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 648 | break; |
| 649 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 650 | case NL80211_IFTYPE_WDS: |
| 651 | case NL80211_IFTYPE_AP_VLAN: |
| 652 | case NL80211_IFTYPE_MONITOR: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 653 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 654 | case NL80211_IFTYPE_UNSPECIFIED: |
| 655 | case __NL80211_IFTYPE_AFTER_LAST: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 656 | BUG(); |
| 657 | break; |
| 658 | } |
| 659 | |
| 660 | flushed = sta_info_flush(local, sdata); |
| 661 | WARN_ON(flushed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 662 | } |
| 663 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 664 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
| 665 | struct sk_buff *skb) |
| 666 | { |
| 667 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); |
| 668 | } |
| 669 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 670 | static const struct net_device_ops ieee80211_dataif_ops = { |
| 671 | .ndo_open = ieee80211_open, |
| 672 | .ndo_stop = ieee80211_stop, |
| 673 | .ndo_uninit = ieee80211_teardown_sdata, |
| 674 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
| 675 | .ndo_set_multicast_list = ieee80211_set_multicast_list, |
| 676 | .ndo_change_mtu = ieee80211_change_mtu, |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 677 | .ndo_set_mac_address = ieee80211_change_mac, |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 678 | .ndo_select_queue = ieee80211_netdev_select_queue, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 679 | }; |
| 680 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 681 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
| 682 | struct sk_buff *skb) |
| 683 | { |
| 684 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 685 | struct ieee80211_local *local = sdata->local; |
| 686 | struct ieee80211_hdr *hdr; |
| 687 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; |
Felix Fietkau | 193e70e | 2010-01-11 06:47:00 +0100 | [diff] [blame] | 688 | u8 *p; |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 689 | |
| 690 | if (local->hw.queues < 4) |
| 691 | return 0; |
| 692 | |
| 693 | if (skb->len < 4 || |
Johannes Berg | b49bb57 | 2010-01-08 19:00:00 +0100 | [diff] [blame] | 694 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 695 | return 0; /* doesn't matter, frame will be dropped */ |
| 696 | |
Johannes Berg | b49bb57 | 2010-01-08 19:00:00 +0100 | [diff] [blame] | 697 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 698 | |
Felix Fietkau | 861a57c | 2010-01-12 04:08:26 +0100 | [diff] [blame] | 699 | if (!ieee80211_is_data(hdr->frame_control)) { |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 700 | skb->priority = 7; |
| 701 | return ieee802_1d_to_ac[skb->priority]; |
| 702 | } |
Felix Fietkau | 861a57c | 2010-01-12 04:08:26 +0100 | [diff] [blame] | 703 | if (!ieee80211_is_data_qos(hdr->frame_control)) { |
| 704 | skb->priority = 0; |
| 705 | return ieee802_1d_to_ac[skb->priority]; |
| 706 | } |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 707 | |
Felix Fietkau | 193e70e | 2010-01-11 06:47:00 +0100 | [diff] [blame] | 708 | p = ieee80211_get_qos_ctl(hdr); |
| 709 | skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK; |
| 710 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 711 | return ieee80211_downgrade_queue(local, skb); |
| 712 | } |
| 713 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 714 | static const struct net_device_ops ieee80211_monitorif_ops = { |
| 715 | .ndo_open = ieee80211_open, |
| 716 | .ndo_stop = ieee80211_stop, |
| 717 | .ndo_uninit = ieee80211_teardown_sdata, |
| 718 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
| 719 | .ndo_set_multicast_list = ieee80211_set_multicast_list, |
| 720 | .ndo_change_mtu = ieee80211_change_mtu, |
| 721 | .ndo_set_mac_address = eth_mac_addr, |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 722 | .ndo_select_queue = ieee80211_monitor_select_queue, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 723 | }; |
| 724 | |
| 725 | static void ieee80211_if_setup(struct net_device *dev) |
| 726 | { |
| 727 | ether_setup(dev); |
| 728 | dev->netdev_ops = &ieee80211_dataif_ops; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 729 | dev->destructor = free_netdev; |
| 730 | } |
| 731 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 732 | /* |
| 733 | * Helper function to initialise an interface to a specific type. |
| 734 | */ |
| 735 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 736 | enum nl80211_iftype type) |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 737 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 738 | /* clear type-dependent union */ |
| 739 | memset(&sdata->u, 0, sizeof(sdata->u)); |
| 740 | |
| 741 | /* and set some type-dependent values */ |
| 742 | sdata->vif.type = type; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 743 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 744 | sdata->wdev.iftype = type; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 745 | |
| 746 | /* only monitor differs */ |
| 747 | sdata->dev->type = ARPHRD_ETHER; |
| 748 | |
| 749 | switch (type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 750 | case NL80211_IFTYPE_AP: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 751 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
| 752 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
| 753 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 754 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 755 | ieee80211_sta_setup_sdata(sdata); |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 756 | break; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 757 | case NL80211_IFTYPE_ADHOC: |
| 758 | ieee80211_ibss_setup_sdata(sdata); |
| 759 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 760 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 761 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 762 | ieee80211_mesh_init_sdata(sdata); |
| 763 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 764 | case NL80211_IFTYPE_MONITOR: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 765 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 766 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 767 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
| 768 | MONITOR_FLAG_OTHER_BSS; |
| 769 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 770 | case NL80211_IFTYPE_WDS: |
| 771 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 772 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 773 | case NL80211_IFTYPE_UNSPECIFIED: |
| 774 | case __NL80211_IFTYPE_AFTER_LAST: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 775 | BUG(); |
| 776 | break; |
| 777 | } |
| 778 | |
| 779 | ieee80211_debugfs_add_netdev(sdata); |
| 780 | } |
| 781 | |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 782 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 783 | enum nl80211_iftype type) |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 784 | { |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 785 | ASSERT_RTNL(); |
| 786 | |
| 787 | if (type == sdata->vif.type) |
| 788 | return 0; |
| 789 | |
Johannes Berg | e60c774 | 2008-11-26 23:31:40 +0100 | [diff] [blame] | 790 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
Pavel Roskin | dcebf45 | 2008-12-22 16:39:36 -0500 | [diff] [blame] | 791 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
| 792 | type == NL80211_IFTYPE_ADHOC) |
Johannes Berg | e60c774 | 2008-11-26 23:31:40 +0100 | [diff] [blame] | 793 | return -EOPNOTSUPP; |
| 794 | |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 795 | /* |
| 796 | * We could, here, on changes between IBSS/STA/MESH modes, |
| 797 | * invoke an MLME function instead that disassociates etc. |
| 798 | * and goes into the requested mode. |
| 799 | */ |
| 800 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 801 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 802 | return -EBUSY; |
| 803 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 804 | /* Purge and reset type-dependent state. */ |
| 805 | ieee80211_teardown_sdata(sdata->dev); |
| 806 | ieee80211_setup_sdata(sdata, type); |
| 807 | |
| 808 | /* reset some values that shouldn't be kept across type changes */ |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 809 | sdata->vif.bss_conf.basic_rates = |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 810 | ieee80211_mandatory_rates(sdata->local, |
| 811 | sdata->local->hw.conf.channel->band); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 812 | sdata->drop_unencrypted = 0; |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 813 | if (type == NL80211_IFTYPE_STATION) |
| 814 | sdata->u.mgd.use_4addr = false; |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 815 | |
| 816 | return 0; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 817 | } |
| 818 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 819 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 820 | struct net_device **new_dev, enum nl80211_iftype type, |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 821 | struct vif_params *params) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 822 | { |
| 823 | struct net_device *ndev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 824 | struct ieee80211_sub_if_data *sdata = NULL; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 825 | int ret, i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 826 | |
| 827 | ASSERT_RTNL(); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 828 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 829 | ndev = alloc_netdev_mq(sizeof(*sdata) + local->hw.vif_data_size, |
| 830 | name, ieee80211_if_setup, local->hw.queues); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 831 | if (!ndev) |
| 832 | return -ENOMEM; |
Johannes Berg | a272a72 | 2009-07-14 00:33:36 +0200 | [diff] [blame] | 833 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 834 | |
Johannes Berg | f3994ec | 2008-05-12 20:51:44 -0700 | [diff] [blame] | 835 | ndev->needed_headroom = local->tx_headroom + |
| 836 | 4*6 /* four MAC addresses */ |
| 837 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ |
| 838 | + 6 /* mesh */ |
| 839 | + 8 /* rfc1042/bridge tunnel */ |
| 840 | - ETH_HLEN /* ethernet hard_header_len */ |
| 841 | + IEEE80211_ENCRYPT_HEADROOM; |
| 842 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; |
| 843 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 844 | ret = dev_alloc_name(ndev, ndev->name); |
| 845 | if (ret < 0) |
| 846 | goto fail; |
| 847 | |
| 848 | memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
John W. Linville | 0adc23f | 2009-10-06 16:27:18 -0400 | [diff] [blame] | 849 | memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 850 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
| 851 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 852 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
| 853 | sdata = netdev_priv(ndev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 854 | ndev->ieee80211_ptr = &sdata->wdev; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 855 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
| 856 | memcpy(sdata->name, ndev->name, IFNAMSIZ); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 857 | |
| 858 | /* initialise type-independent data */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 859 | sdata->wdev.wiphy = local->hw.wiphy; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 860 | sdata->local = local; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 861 | sdata->dev = ndev; |
| 862 | |
| 863 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
| 864 | skb_queue_head_init(&sdata->fragments[i].skb_list); |
| 865 | |
| 866 | INIT_LIST_HEAD(&sdata->key_list); |
| 867 | |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 868 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
| 869 | struct ieee80211_supported_band *sband; |
| 870 | sband = local->hw.wiphy->bands[i]; |
| 871 | sdata->rc_rateidx_mask[i] = |
| 872 | sband ? (1 << sband->n_bitrates) - 1 : 0; |
| 873 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 874 | |
| 875 | /* setup type-dependent data */ |
| 876 | ieee80211_setup_sdata(sdata, type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 877 | |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 878 | if (params) { |
| 879 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; |
| 880 | if (type == NL80211_IFTYPE_STATION) |
| 881 | sdata->u.mgd.use_4addr = params->use_4addr; |
| 882 | } |
| 883 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 884 | ret = register_netdevice(ndev); |
| 885 | if (ret) |
| 886 | goto fail; |
| 887 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 888 | if (ieee80211_vif_is_mesh(&sdata->vif) && |
| 889 | params && params->mesh_id_len) |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 890 | ieee80211_sdata_set_mesh_id(sdata, |
| 891 | params->mesh_id_len, |
| 892 | params->mesh_id); |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 893 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 894 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 895 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 896 | mutex_unlock(&local->iflist_mtx); |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 897 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 898 | if (new_dev) |
| 899 | *new_dev = ndev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 900 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 901 | return 0; |
| 902 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 903 | fail: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 904 | free_netdev(ndev); |
| 905 | return ret; |
| 906 | } |
| 907 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 908 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 909 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 910 | ASSERT_RTNL(); |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 911 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 912 | mutex_lock(&sdata->local->iflist_mtx); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 913 | list_del_rcu(&sdata->list); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 914 | mutex_unlock(&sdata->local->iflist_mtx); |
| 915 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 916 | synchronize_rcu(); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 917 | unregister_netdevice(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 918 | } |
| 919 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 920 | /* |
| 921 | * Remove all interfaces, may only be called at hardware unregistration |
| 922 | * time because it doesn't do RCU-safe list removals. |
| 923 | */ |
| 924 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 925 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 926 | struct ieee80211_sub_if_data *sdata, *tmp; |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 927 | LIST_HEAD(unreg_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 928 | |
| 929 | ASSERT_RTNL(); |
| 930 | |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 931 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 932 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
| 933 | list_del(&sdata->list); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 934 | |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 935 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 936 | } |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 937 | mutex_unlock(&local->iflist_mtx); |
| 938 | unregister_netdevice_many(&unreg_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 939 | } |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 940 | |
| 941 | static u32 ieee80211_idle_off(struct ieee80211_local *local, |
| 942 | const char *reason) |
| 943 | { |
| 944 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) |
| 945 | return 0; |
| 946 | |
| 947 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 948 | printk(KERN_DEBUG "%s: device no longer idle - %s\n", |
| 949 | wiphy_name(local->hw.wiphy), reason); |
| 950 | #endif |
| 951 | |
| 952 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; |
| 953 | return IEEE80211_CONF_CHANGE_IDLE; |
| 954 | } |
| 955 | |
| 956 | static u32 ieee80211_idle_on(struct ieee80211_local *local) |
| 957 | { |
| 958 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) |
| 959 | return 0; |
| 960 | |
| 961 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 962 | printk(KERN_DEBUG "%s: device now idle\n", |
| 963 | wiphy_name(local->hw.wiphy)); |
| 964 | #endif |
| 965 | |
Johannes Berg | a80f7c0 | 2009-12-23 13:15:32 +0100 | [diff] [blame] | 966 | drv_flush(local, false); |
| 967 | |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 968 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; |
| 969 | return IEEE80211_CONF_CHANGE_IDLE; |
| 970 | } |
| 971 | |
| 972 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local) |
| 973 | { |
| 974 | struct ieee80211_sub_if_data *sdata; |
| 975 | int count = 0; |
| 976 | |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 977 | if (!list_empty(&local->work_list)) |
| 978 | return ieee80211_idle_off(local, "working"); |
| 979 | |
Helmut Schaa | fbe9c42 | 2009-07-23 12:14:04 +0200 | [diff] [blame] | 980 | if (local->scanning) |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 981 | return ieee80211_idle_off(local, "scanning"); |
| 982 | |
| 983 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 984 | if (!ieee80211_sdata_running(sdata)) |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 985 | continue; |
| 986 | /* do not count disabled managed interfaces */ |
| 987 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 988 | !sdata->u.mgd.associated) |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 989 | continue; |
| 990 | /* do not count unused IBSS interfaces */ |
| 991 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && |
| 992 | !sdata->u.ibss.ssid_len) |
| 993 | continue; |
| 994 | /* count everything else */ |
| 995 | count++; |
| 996 | } |
| 997 | |
| 998 | if (!count) |
| 999 | return ieee80211_idle_on(local); |
| 1000 | else |
| 1001 | return ieee80211_idle_off(local, "in use"); |
| 1002 | |
| 1003 | return 0; |
| 1004 | } |
| 1005 | |
| 1006 | void ieee80211_recalc_idle(struct ieee80211_local *local) |
| 1007 | { |
| 1008 | u32 chg; |
| 1009 | |
| 1010 | mutex_lock(&local->iflist_mtx); |
| 1011 | chg = __ieee80211_recalc_idle(local); |
| 1012 | mutex_unlock(&local->iflist_mtx); |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 1013 | if (chg) |
| 1014 | ieee80211_hw_config(local, chg); |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 1015 | } |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1016 | |
| 1017 | static int netdev_notify(struct notifier_block *nb, |
| 1018 | unsigned long state, |
| 1019 | void *ndev) |
| 1020 | { |
| 1021 | struct net_device *dev = ndev; |
| 1022 | struct ieee80211_sub_if_data *sdata; |
| 1023 | |
| 1024 | if (state != NETDEV_CHANGENAME) |
| 1025 | return 0; |
| 1026 | |
| 1027 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) |
| 1028 | return 0; |
| 1029 | |
| 1030 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) |
| 1031 | return 0; |
| 1032 | |
| 1033 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 1034 | |
Johannes Berg | 2f5265e | 2010-02-12 10:45:05 +0100 | [diff] [blame] | 1035 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1036 | |
| 1037 | ieee80211_debugfs_rename_netdev(sdata); |
| 1038 | return 0; |
| 1039 | } |
| 1040 | |
| 1041 | static struct notifier_block mac80211_netdev_notifier = { |
| 1042 | .notifier_call = netdev_notify, |
| 1043 | }; |
| 1044 | |
| 1045 | int ieee80211_iface_init(void) |
| 1046 | { |
| 1047 | return register_netdevice_notifier(&mac80211_netdev_notifier); |
| 1048 | } |
| 1049 | |
| 1050 | void ieee80211_iface_exit(void) |
| 1051 | { |
| 1052 | unregister_netdevice_notifier(&mac80211_netdev_notifier); |
| 1053 | } |