Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
Johannes Berg | c5d54fb | 2013-03-26 21:54:24 +0100 | [diff] [blame] | 2 | * Interface handling |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 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> |
Johannes Berg | d98ad83 | 2014-09-03 15:24:57 +0300 | [diff] [blame] | 8 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 14 | #include <linux/slab.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 15 | #include <linux/kernel.h> |
| 16 | #include <linux/if_arp.h> |
| 17 | #include <linux/netdevice.h> |
| 18 | #include <linux/rtnetlink.h> |
| 19 | #include <net/mac80211.h> |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 20 | #include <net/ieee80211_radiotap.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 21 | #include "ieee80211_i.h" |
| 22 | #include "sta_info.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 23 | #include "debugfs_netdev.h" |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 24 | #include "mesh.h" |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 25 | #include "led.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 26 | #include "driver-ops.h" |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 27 | #include "wme.h" |
Bill Jordan | 1be7fe8 | 2010-10-01 11:20:41 -0400 | [diff] [blame] | 28 | #include "rate.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 29 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 30 | /** |
| 31 | * DOC: Interface list locking |
| 32 | * |
| 33 | * The interface list in each struct ieee80211_local is protected |
| 34 | * three-fold: |
| 35 | * |
| 36 | * (1) modifications may only be done under the RTNL |
| 37 | * (2) modifications and readers are protected against each other by |
| 38 | * the iflist_mtx. |
| 39 | * (3) modifications are done in an RCU manner so atomic readers |
| 40 | * can traverse the list in RCU-safe blocks. |
| 41 | * |
| 42 | * As a consequence, reads (traversals) of the list can be protected |
| 43 | * by either the RTNL, the iflist_mtx or RCU. |
| 44 | */ |
| 45 | |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 46 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
| 47 | { |
| 48 | struct ieee80211_chanctx_conf *chanctx_conf; |
| 49 | int power; |
| 50 | |
| 51 | rcu_read_lock(); |
| 52 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); |
| 53 | if (!chanctx_conf) { |
| 54 | rcu_read_unlock(); |
| 55 | return false; |
| 56 | } |
| 57 | |
Simon Wunderlich | 0430c88 | 2013-07-08 16:55:55 +0200 | [diff] [blame] | 58 | power = ieee80211_chandef_max_power(&chanctx_conf->def); |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 59 | rcu_read_unlock(); |
| 60 | |
| 61 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) |
| 62 | power = min(power, sdata->user_power_level); |
| 63 | |
| 64 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) |
| 65 | power = min(power, sdata->ap_power_level); |
| 66 | |
| 67 | if (power != sdata->vif.bss_conf.txpower) { |
| 68 | sdata->vif.bss_conf.txpower = power; |
| 69 | ieee80211_hw_config(sdata->local, 0); |
| 70 | return true; |
| 71 | } |
| 72 | |
| 73 | return false; |
| 74 | } |
| 75 | |
Lorenzo Bianconi | db82d8a | 2015-01-14 12:55:08 +0100 | [diff] [blame] | 76 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, |
| 77 | bool update_bss) |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 78 | { |
Emmanuel Grumbach | 5ad11b5 | 2015-11-17 10:24:39 +0200 | [diff] [blame^] | 79 | if (__ieee80211_recalc_txpower(sdata) || |
| 80 | (update_bss && ieee80211_sdata_running(sdata))) |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 81 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); |
| 82 | } |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 83 | |
Johannes Berg | 62a40a1 | 2013-04-08 11:52:34 +0200 | [diff] [blame] | 84 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 85 | { |
| 86 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) |
| 87 | return 0; |
| 88 | |
| 89 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; |
| 90 | return IEEE80211_CONF_CHANGE_IDLE; |
| 91 | } |
| 92 | |
Johannes Berg | 62a40a1 | 2013-04-08 11:52:34 +0200 | [diff] [blame] | 93 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 94 | { |
| 95 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) |
| 96 | return 0; |
| 97 | |
Emmanuel Grumbach | 3b24f4c | 2015-01-07 15:42:39 +0200 | [diff] [blame] | 98 | ieee80211_flush_queues(local, NULL, false); |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 99 | |
| 100 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; |
| 101 | return IEEE80211_CONF_CHANGE_IDLE; |
| 102 | } |
| 103 | |
Johannes Berg | 62a40a1 | 2013-04-08 11:52:34 +0200 | [diff] [blame] | 104 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
| 105 | bool force_active) |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 106 | { |
Johannes Berg | 1d5e126 | 2014-02-12 11:29:32 +0100 | [diff] [blame] | 107 | bool working, scanning, active; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 108 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 109 | |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 110 | lockdep_assert_held(&local->mtx); |
| 111 | |
Johannes Berg | 62a40a1 | 2013-04-08 11:52:34 +0200 | [diff] [blame] | 112 | active = force_active || |
| 113 | !list_empty(&local->chanctx_list) || |
| 114 | local->monitors; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 115 | |
Johannes Berg | 1d5e126 | 2014-02-12 11:29:32 +0100 | [diff] [blame] | 116 | working = !local->ops->remain_on_channel && |
| 117 | !list_empty(&local->roc_list); |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 118 | |
Johannes Berg | f1e3e05 | 2013-02-06 23:57:57 +0100 | [diff] [blame] | 119 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
| 120 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 121 | |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 122 | if (working || scanning) |
| 123 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; |
| 124 | else |
| 125 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; |
| 126 | |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 127 | if (active) |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 128 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
| 129 | else |
| 130 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
| 131 | |
| 132 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); |
| 133 | |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 134 | if (working || scanning || active) |
Johannes Berg | 62a40a1 | 2013-04-08 11:52:34 +0200 | [diff] [blame] | 135 | return __ieee80211_idle_off(local); |
| 136 | return __ieee80211_idle_on(local); |
| 137 | } |
| 138 | |
| 139 | u32 ieee80211_idle_off(struct ieee80211_local *local) |
| 140 | { |
| 141 | return __ieee80211_recalc_idle(local, true); |
| 142 | } |
| 143 | |
| 144 | void ieee80211_recalc_idle(struct ieee80211_local *local) |
| 145 | { |
| 146 | u32 change = __ieee80211_recalc_idle(local, false); |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 147 | if (change) |
| 148 | ieee80211_hw_config(local, change); |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 149 | } |
| 150 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 151 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
| 152 | { |
Chaitanya | 09b1426 | 2012-12-21 17:15:17 +0530 | [diff] [blame] | 153 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 154 | return -EINVAL; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 155 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 156 | dev->mtu = new_mtu; |
| 157 | return 0; |
| 158 | } |
| 159 | |
John W. Linville | 3899ba9 | 2013-06-11 14:48:32 -0400 | [diff] [blame] | 160 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 161 | bool check_dup) |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 162 | { |
Helmut Schaa | ac20976 | 2013-05-27 10:43:09 +0200 | [diff] [blame] | 163 | struct ieee80211_local *local = sdata->local; |
| 164 | struct ieee80211_sub_if_data *iter; |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 165 | u64 new, mask, tmp; |
| 166 | u8 *m; |
| 167 | int ret = 0; |
| 168 | |
| 169 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) |
| 170 | return 0; |
| 171 | |
| 172 | m = addr; |
| 173 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 174 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 175 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 176 | |
| 177 | m = local->hw.wiphy->addr_mask; |
| 178 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 179 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 180 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 181 | |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 182 | if (!check_dup) |
| 183 | return ret; |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 184 | |
| 185 | mutex_lock(&local->iflist_mtx); |
Helmut Schaa | ac20976 | 2013-05-27 10:43:09 +0200 | [diff] [blame] | 186 | list_for_each_entry(iter, &local->interfaces, list) { |
| 187 | if (iter == sdata) |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 188 | continue; |
| 189 | |
John W. Linville | 3899ba9 | 2013-06-11 14:48:32 -0400 | [diff] [blame] | 190 | if (iter->vif.type == NL80211_IFTYPE_MONITOR && |
| 191 | !(iter->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
Helmut Schaa | ac20976 | 2013-05-27 10:43:09 +0200 | [diff] [blame] | 192 | continue; |
| 193 | |
| 194 | m = iter->vif.addr; |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 195 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 196 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 197 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 198 | |
| 199 | if ((new & ~mask) != (tmp & ~mask)) { |
| 200 | ret = -EINVAL; |
| 201 | break; |
| 202 | } |
| 203 | } |
| 204 | mutex_unlock(&local->iflist_mtx); |
| 205 | |
| 206 | return ret; |
| 207 | } |
| 208 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 209 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
| 210 | { |
| 211 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 212 | struct sockaddr *sa = addr; |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 213 | bool check_dup = true; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 214 | int ret; |
| 215 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 216 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 217 | return -EBUSY; |
| 218 | |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 219 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
| 220 | !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
| 221 | check_dup = false; |
| 222 | |
John W. Linville | 3899ba9 | 2013-06-11 14:48:32 -0400 | [diff] [blame] | 223 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 224 | if (ret) |
| 225 | return ret; |
| 226 | |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 227 | ret = eth_mac_addr(dev, sa); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 228 | |
| 229 | if (ret == 0) |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 230 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 231 | |
| 232 | return ret; |
| 233 | } |
| 234 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 235 | static inline int identical_mac_addr_allowed(int type1, int type2) |
| 236 | { |
| 237 | return type1 == NL80211_IFTYPE_MONITOR || |
| 238 | type2 == NL80211_IFTYPE_MONITOR || |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 239 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
| 240 | type2 == NL80211_IFTYPE_P2P_DEVICE || |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 241 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
| 242 | (type1 == NL80211_IFTYPE_WDS && |
| 243 | (type2 == NL80211_IFTYPE_WDS || |
| 244 | type2 == NL80211_IFTYPE_AP)) || |
| 245 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || |
| 246 | (type1 == NL80211_IFTYPE_AP_VLAN && |
| 247 | (type2 == NL80211_IFTYPE_AP || |
| 248 | type2 == NL80211_IFTYPE_AP_VLAN)); |
| 249 | } |
| 250 | |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 251 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
| 252 | enum nl80211_iftype iftype) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 253 | { |
Johannes Berg | b4a4bf5 | 2008-09-26 13:34:54 +0200 | [diff] [blame] | 254 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 255 | struct ieee80211_sub_if_data *nsdata; |
Luciano Coelho | b6a5501 | 2014-02-27 11:07:21 +0200 | [diff] [blame] | 256 | int ret; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 257 | |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 258 | ASSERT_RTNL(); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 259 | |
| 260 | /* we hold the RTNL here so can safely walk the list */ |
| 261 | list_for_each_entry(nsdata, &local->interfaces, list) { |
Johannes Berg | 371a255 | 2012-06-19 15:54:05 +0200 | [diff] [blame] | 262 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 263 | /* |
Rostislav Lisovy | 239281f | 2014-11-03 10:33:19 +0100 | [diff] [blame] | 264 | * Only OCB and monitor mode may coexist |
| 265 | */ |
| 266 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && |
| 267 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || |
| 268 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
| 269 | nsdata->vif.type == NL80211_IFTYPE_OCB)) |
| 270 | return -EBUSY; |
| 271 | |
| 272 | /* |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 273 | * Allow only a single IBSS interface to be up at any |
| 274 | * time. This is restricted because beacon distribution |
| 275 | * cannot work properly if both are in the same IBSS. |
| 276 | * |
| 277 | * To remove this restriction we'd have to disallow them |
| 278 | * from setting the same SSID on different IBSS interfaces |
| 279 | * belonging to the same hardware. Then, however, we're |
| 280 | * faced with having to adopt two different TSF timers... |
| 281 | */ |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 282 | if (iftype == NL80211_IFTYPE_ADHOC && |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 283 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
| 284 | return -EBUSY; |
Simon Wunderlich | 73da7d5 | 2013-07-11 16:09:06 +0200 | [diff] [blame] | 285 | /* |
| 286 | * will not add another interface while any channel |
| 287 | * switch is active. |
| 288 | */ |
| 289 | if (nsdata->vif.csa_active) |
| 290 | return -EBUSY; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 291 | |
| 292 | /* |
| 293 | * The remaining checks are only performed for interfaces |
| 294 | * with the same MAC address. |
| 295 | */ |
Johannes Berg | 371a255 | 2012-06-19 15:54:05 +0200 | [diff] [blame] | 296 | if (!ether_addr_equal(sdata->vif.addr, |
| 297 | nsdata->vif.addr)) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 298 | continue; |
| 299 | |
| 300 | /* |
| 301 | * check whether it may have the same address |
| 302 | */ |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 303 | if (!identical_mac_addr_allowed(iftype, |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 304 | nsdata->vif.type)) |
| 305 | return -ENOTUNIQ; |
| 306 | |
| 307 | /* |
| 308 | * can only add VLANs to enabled APs |
| 309 | */ |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 310 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 311 | nsdata->vif.type == NL80211_IFTYPE_AP) |
| 312 | sdata->bss = &nsdata->u.ap; |
| 313 | } |
| 314 | } |
| 315 | |
Luciano Coelho | b6a5501 | 2014-02-27 11:07:21 +0200 | [diff] [blame] | 316 | mutex_lock(&local->chanctx_mtx); |
| 317 | ret = ieee80211_check_combinations(sdata, NULL, 0, 0); |
| 318 | mutex_unlock(&local->chanctx_mtx); |
| 319 | return ret; |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 320 | } |
| 321 | |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 322 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
| 323 | enum nl80211_iftype iftype) |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 324 | { |
| 325 | int n_queues = sdata->local->hw.queues; |
| 326 | int i; |
| 327 | |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 328 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
Ilan Peer | 0ef24e5 | 2012-08-21 12:43:35 +0300 | [diff] [blame] | 329 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
| 330 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == |
| 331 | IEEE80211_INVAL_HW_QUEUE)) |
| 332 | return -EINVAL; |
| 333 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= |
| 334 | n_queues)) |
| 335 | return -EINVAL; |
| 336 | } |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 337 | } |
| 338 | |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 339 | if ((iftype != NL80211_IFTYPE_AP && |
| 340 | iftype != NL80211_IFTYPE_P2P_GO && |
| 341 | iftype != NL80211_IFTYPE_MESH_POINT) || |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 342 | !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 343 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) |
| 348 | return -EINVAL; |
| 349 | |
| 350 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) |
| 351 | return -EINVAL; |
| 352 | |
| 353 | return 0; |
| 354 | } |
| 355 | |
Christian Lamparter | 85416a4 | 2010-10-02 13:17:07 +0200 | [diff] [blame] | 356 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
| 357 | const int offset) |
| 358 | { |
| 359 | struct ieee80211_local *local = sdata->local; |
| 360 | u32 flags = sdata->u.mntr_flags; |
| 361 | |
| 362 | #define ADJUST(_f, _s) do { \ |
| 363 | if (flags & MONITOR_FLAG_##_f) \ |
| 364 | local->fif_##_s += offset; \ |
| 365 | } while (0) |
| 366 | |
| 367 | ADJUST(FCSFAIL, fcsfail); |
| 368 | ADJUST(PLCPFAIL, plcpfail); |
| 369 | ADJUST(CONTROL, control); |
| 370 | ADJUST(CONTROL, pspoll); |
| 371 | ADJUST(OTHER_BSS, other_bss); |
| 372 | |
| 373 | #undef ADJUST |
| 374 | } |
| 375 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 376 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
| 377 | { |
| 378 | struct ieee80211_local *local = sdata->local; |
| 379 | int i; |
| 380 | |
| 381 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 382 | if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 383 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; |
Johannes Berg | a9d3c05 | 2012-05-07 17:45:29 +0200 | [diff] [blame] | 384 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 385 | sdata->vif.hw_queue[i] = i; |
Johannes Berg | a9d3c05 | 2012-05-07 17:45:29 +0200 | [diff] [blame] | 386 | else |
| 387 | sdata->vif.hw_queue[i] = 0; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 388 | } |
| 389 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
| 390 | } |
| 391 | |
Johannes Berg | 3c3e21e | 2013-03-27 23:20:27 +0100 | [diff] [blame] | 392 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 393 | { |
| 394 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 395 | int ret; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 396 | |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 397 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 398 | return 0; |
| 399 | |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 400 | ASSERT_RTNL(); |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 401 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 402 | if (local->monitor_sdata) |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 403 | return 0; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 404 | |
| 405 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 406 | if (!sdata) |
| 407 | return -ENOMEM; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 408 | |
| 409 | /* set up data */ |
| 410 | sdata->local = local; |
| 411 | sdata->vif.type = NL80211_IFTYPE_MONITOR; |
| 412 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", |
| 413 | wiphy_name(local->hw.wiphy)); |
Emmanuel Grumbach | 34171dc | 2014-05-25 15:35:41 +0300 | [diff] [blame] | 414 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 415 | |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 416 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
| 417 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 418 | ieee80211_set_default_queues(sdata); |
| 419 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 420 | ret = drv_add_interface(local, sdata); |
| 421 | if (WARN_ON(ret)) { |
| 422 | /* ok .. stupid driver, it asked for this! */ |
| 423 | kfree(sdata); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 424 | return ret; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 425 | } |
| 426 | |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 427 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 428 | if (ret) { |
| 429 | kfree(sdata); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 430 | return ret; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 431 | } |
| 432 | |
Johannes Berg | fab57a6 | 2014-01-29 13:28:02 +0100 | [diff] [blame] | 433 | mutex_lock(&local->iflist_mtx); |
| 434 | rcu_assign_pointer(local->monitor_sdata, sdata); |
| 435 | mutex_unlock(&local->iflist_mtx); |
| 436 | |
Johannes Berg | 34a3740 | 2013-12-18 09:43:33 +0100 | [diff] [blame] | 437 | mutex_lock(&local->mtx); |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 438 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 439 | IEEE80211_CHANCTX_EXCLUSIVE); |
Johannes Berg | 34a3740 | 2013-12-18 09:43:33 +0100 | [diff] [blame] | 440 | mutex_unlock(&local->mtx); |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 441 | if (ret) { |
Johannes Berg | fab57a6 | 2014-01-29 13:28:02 +0100 | [diff] [blame] | 442 | mutex_lock(&local->iflist_mtx); |
Monam Agarwal | 0c2bef46 | 2014-03-24 00:51:43 +0530 | [diff] [blame] | 443 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
Johannes Berg | fab57a6 | 2014-01-29 13:28:02 +0100 | [diff] [blame] | 444 | mutex_unlock(&local->iflist_mtx); |
| 445 | synchronize_net(); |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 446 | drv_remove_interface(local, sdata); |
| 447 | kfree(sdata); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 448 | return ret; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 449 | } |
| 450 | |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 451 | return 0; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 452 | } |
| 453 | |
Johannes Berg | 3c3e21e | 2013-03-27 23:20:27 +0100 | [diff] [blame] | 454 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 455 | { |
| 456 | struct ieee80211_sub_if_data *sdata; |
| 457 | |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 458 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 459 | return; |
| 460 | |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 461 | ASSERT_RTNL(); |
| 462 | |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 463 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 464 | |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 465 | sdata = rcu_dereference_protected(local->monitor_sdata, |
| 466 | lockdep_is_held(&local->iflist_mtx)); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 467 | if (!sdata) { |
| 468 | mutex_unlock(&local->iflist_mtx); |
| 469 | return; |
| 470 | } |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 471 | |
Monam Agarwal | 0c2bef46 | 2014-03-24 00:51:43 +0530 | [diff] [blame] | 472 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame] | 473 | mutex_unlock(&local->iflist_mtx); |
| 474 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 475 | synchronize_net(); |
| 476 | |
Johannes Berg | 34a3740 | 2013-12-18 09:43:33 +0100 | [diff] [blame] | 477 | mutex_lock(&local->mtx); |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 478 | ieee80211_vif_release_channel(sdata); |
Johannes Berg | 34a3740 | 2013-12-18 09:43:33 +0100 | [diff] [blame] | 479 | mutex_unlock(&local->mtx); |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 480 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 481 | drv_remove_interface(local, sdata); |
| 482 | |
| 483 | kfree(sdata); |
| 484 | } |
| 485 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 486 | /* |
| 487 | * NOTE: Be very careful when changing this function, it must NOT return |
| 488 | * an error on interface type changes that have been pre-checked, so most |
| 489 | * checks should be in ieee80211_check_concurrent_iface. |
| 490 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 491 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 492 | { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 493 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
| 494 | struct net_device *dev = wdev->netdev; |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 495 | struct ieee80211_local *local = sdata->local; |
| 496 | struct sta_info *sta; |
| 497 | u32 changed = 0; |
| 498 | int res; |
| 499 | u32 hw_reconf_flags = 0; |
| 500 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 501 | switch (sdata->vif.type) { |
| 502 | case NL80211_IFTYPE_WDS: |
| 503 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
| 504 | return -ENOLINK; |
| 505 | break; |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 506 | case NL80211_IFTYPE_AP_VLAN: { |
| 507 | struct ieee80211_sub_if_data *master; |
| 508 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 509 | if (!sdata->bss) |
| 510 | return -ENOLINK; |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 511 | |
Michal Kazior | 4e141da | 2014-03-05 13:14:08 +0100 | [diff] [blame] | 512 | mutex_lock(&local->mtx); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 513 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
Michal Kazior | 4e141da | 2014-03-05 13:14:08 +0100 | [diff] [blame] | 514 | mutex_unlock(&local->mtx); |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 515 | |
| 516 | master = container_of(sdata->bss, |
| 517 | struct ieee80211_sub_if_data, u.ap); |
| 518 | sdata->control_port_protocol = |
| 519 | master->control_port_protocol; |
| 520 | sdata->control_port_no_encrypt = |
| 521 | master->control_port_no_encrypt; |
Johannes Berg | 1351c5d | 2013-05-23 23:09:56 +0200 | [diff] [blame] | 522 | sdata->vif.cab_queue = master->vif.cab_queue; |
| 523 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, |
| 524 | sizeof(sdata->vif.hw_queue)); |
Felix Fietkau | 2967e03 | 2014-11-24 18:12:16 +0100 | [diff] [blame] | 525 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; |
Michal Kazior | f9dca80 | 2015-05-13 09:16:48 +0000 | [diff] [blame] | 526 | |
| 527 | mutex_lock(&local->key_mtx); |
| 528 | sdata->crypto_tx_tailroom_needed_cnt += |
| 529 | master->crypto_tx_tailroom_needed_cnt; |
| 530 | mutex_unlock(&local->key_mtx); |
| 531 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 532 | break; |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 533 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 534 | case NL80211_IFTYPE_AP: |
| 535 | sdata->bss = &sdata->u.ap; |
| 536 | break; |
| 537 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 538 | case NL80211_IFTYPE_STATION: |
| 539 | case NL80211_IFTYPE_MONITOR: |
| 540 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 541 | case NL80211_IFTYPE_P2P_DEVICE: |
Rostislav Lisovy | 6e0bd6c | 2014-11-03 10:33:18 +0100 | [diff] [blame] | 542 | case NL80211_IFTYPE_OCB: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 543 | /* no special treatment */ |
| 544 | break; |
| 545 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 546 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 547 | case NL80211_IFTYPE_P2P_CLIENT: |
| 548 | case NL80211_IFTYPE_P2P_GO: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 549 | /* cannot happen */ |
| 550 | WARN_ON(1); |
| 551 | break; |
| 552 | } |
| 553 | |
| 554 | if (local->open_count == 0) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 555 | res = drv_start(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 556 | if (res) |
| 557 | goto err_del_bss; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 558 | /* we're brought up, everything changes */ |
| 559 | hw_reconf_flags = ~0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 560 | ieee80211_led_radio(local, true); |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 561 | ieee80211_mod_tpt_led_trig(local, |
| 562 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 563 | } |
| 564 | |
| 565 | /* |
Johannes Berg | bf533e0 | 2010-08-27 12:35:56 +0200 | [diff] [blame] | 566 | * Copy the hopefully now-present MAC address to |
| 567 | * this interface, if it has the special null one. |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 568 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 569 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
Johannes Berg | bf533e0 | 2010-08-27 12:35:56 +0200 | [diff] [blame] | 570 | memcpy(dev->dev_addr, |
| 571 | local->hw.wiphy->perm_addr, |
| 572 | ETH_ALEN); |
| 573 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 574 | |
Johannes Berg | bf533e0 | 2010-08-27 12:35:56 +0200 | [diff] [blame] | 575 | if (!is_valid_ether_addr(dev->dev_addr)) { |
Johannes Berg | 4d6c36f | 2012-04-03 14:45:54 +0200 | [diff] [blame] | 576 | res = -EADDRNOTAVAIL; |
| 577 | goto err_stop; |
John W. Linville | 0adc23f | 2009-10-06 16:27:18 -0400 | [diff] [blame] | 578 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 579 | } |
| 580 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 581 | switch (sdata->vif.type) { |
| 582 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 583 | /* no need to tell driver, but set carrier and chanctx */ |
| 584 | if (rtnl_dereference(sdata->bss->beacon)) { |
| 585 | ieee80211_vif_vlan_copy_chanctx(sdata); |
Johannes Berg | 3edaf3e | 2012-04-03 10:24:00 +0200 | [diff] [blame] | 586 | netif_carrier_on(dev); |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 587 | } else { |
Johannes Berg | 3edaf3e | 2012-04-03 10:24:00 +0200 | [diff] [blame] | 588 | netif_carrier_off(dev); |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 589 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 590 | break; |
| 591 | case NL80211_IFTYPE_MONITOR: |
| 592 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 593 | local->cooked_mntrs++; |
| 594 | break; |
| 595 | } |
| 596 | |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 597 | if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) { |
| 598 | res = drv_add_interface(local, sdata); |
| 599 | if (res) |
| 600 | goto err_stop; |
| 601 | } else if (local->monitors == 0 && local->open_count == 0) { |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 602 | res = ieee80211_add_virtual_monitor(local); |
| 603 | if (res) |
| 604 | goto err_stop; |
| 605 | } |
| 606 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 607 | /* must be before the call to ieee80211_configure_filter */ |
| 608 | local->monitors++; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 609 | if (local->monitors == 1) { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 610 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
| 611 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 612 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 613 | |
Christian Lamparter | 85416a4 | 2010-10-02 13:17:07 +0200 | [diff] [blame] | 614 | ieee80211_adjust_monitor_flags(sdata, 1); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 615 | ieee80211_configure_filter(local); |
Felix Fietkau | 801d929 | 2013-03-02 19:05:47 +0100 | [diff] [blame] | 616 | mutex_lock(&local->mtx); |
| 617 | ieee80211_recalc_idle(local); |
| 618 | mutex_unlock(&local->mtx); |
David Gnedt | 53e9b1d | 2010-07-19 20:44:02 +0200 | [diff] [blame] | 619 | |
| 620 | netif_carrier_on(dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 621 | break; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 622 | default: |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 623 | if (coming_up) { |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 624 | ieee80211_del_virtual_monitor(local); |
| 625 | |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 626 | res = drv_add_interface(local, sdata); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 627 | if (res) |
| 628 | goto err_stop; |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 629 | res = ieee80211_check_queues(sdata, |
| 630 | ieee80211_vif_type_p2p(&sdata->vif)); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 631 | if (res) |
| 632 | goto err_del_interface; |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 633 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 634 | |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 635 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 636 | local->fif_pspoll++; |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 637 | local->fif_probe_req++; |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 638 | |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 639 | ieee80211_configure_filter(local); |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 640 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
| 641 | local->fif_probe_req++; |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 642 | } |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 643 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 644 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
| 645 | changed |= ieee80211_reset_erp_info(sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 646 | ieee80211_bss_info_change_notify(sdata, changed); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 647 | |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 648 | switch (sdata->vif.type) { |
| 649 | case NL80211_IFTYPE_STATION: |
| 650 | case NL80211_IFTYPE_ADHOC: |
| 651 | case NL80211_IFTYPE_AP: |
| 652 | case NL80211_IFTYPE_MESH_POINT: |
Rostislav Lisovy | 6e0bd6c | 2014-11-03 10:33:18 +0100 | [diff] [blame] | 653 | case NL80211_IFTYPE_OCB: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 654 | netif_carrier_off(dev); |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 655 | break; |
Johannes Berg | 1411af1 | 2012-07-30 19:48:09 +0200 | [diff] [blame] | 656 | case NL80211_IFTYPE_WDS: |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 657 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | 1411af1 | 2012-07-30 19:48:09 +0200 | [diff] [blame] | 658 | break; |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 659 | default: |
Johannes Berg | a231082 | 2013-03-26 22:10:02 +0100 | [diff] [blame] | 660 | /* not reached */ |
| 661 | WARN_ON(1); |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 662 | } |
Eliad Peller | 5903459 | 2011-10-16 10:57:31 +0200 | [diff] [blame] | 663 | |
| 664 | /* |
Johannes Berg | cec6628 | 2015-10-22 17:46:04 +0200 | [diff] [blame] | 665 | * Set default queue parameters so drivers don't |
Eliad Peller | 5903459 | 2011-10-16 10:57:31 +0200 | [diff] [blame] | 666 | * need to initialise the hardware if the hardware |
Johannes Berg | cec6628 | 2015-10-22 17:46:04 +0200 | [diff] [blame] | 667 | * doesn't start up with sane defaults. |
| 668 | * Enable QoS for anything but station interfaces. |
Eliad Peller | 5903459 | 2011-10-16 10:57:31 +0200 | [diff] [blame] | 669 | */ |
Johannes Berg | cec6628 | 2015-10-22 17:46:04 +0200 | [diff] [blame] | 670 | ieee80211_set_wmm_default(sdata, true, |
| 671 | sdata->vif.type != NL80211_IFTYPE_STATION); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 672 | } |
| 673 | |
Johannes Berg | 2d2080c | 2010-09-15 15:13:13 +0200 | [diff] [blame] | 674 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
| 675 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 676 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
| 677 | /* Create STA entry for the WDS peer */ |
| 678 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, |
| 679 | GFP_KERNEL); |
| 680 | if (!sta) { |
| 681 | res = -ENOMEM; |
| 682 | goto err_del_interface; |
| 683 | } |
| 684 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 685 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
| 686 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); |
| 687 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 688 | |
| 689 | res = sta_info_insert(sta); |
| 690 | if (res) { |
| 691 | /* STA has been freed */ |
| 692 | goto err_del_interface; |
| 693 | } |
Bill Jordan | 1be7fe8 | 2010-10-01 11:20:41 -0400 | [diff] [blame] | 694 | |
| 695 | rate_control_rate_init(sta); |
Johannes Berg | 1411af1 | 2012-07-30 19:48:09 +0200 | [diff] [blame] | 696 | netif_carrier_on(dev); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 697 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
| 698 | rcu_assign_pointer(local->p2p_sdata, sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 699 | } |
| 700 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 701 | /* |
| 702 | * set_multicast_list will be invoked by the networking core |
| 703 | * which will check whether any increments here were done in |
| 704 | * error and sync them down to the hardware as filter flags. |
| 705 | */ |
| 706 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 707 | atomic_inc(&local->iff_allmultis); |
| 708 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 709 | if (coming_up) |
| 710 | local->open_count++; |
| 711 | |
Eliad Peller | 5903459 | 2011-10-16 10:57:31 +0200 | [diff] [blame] | 712 | if (hw_reconf_flags) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 713 | ieee80211_hw_config(local, hw_reconf_flags); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 714 | |
Johannes Berg | 4a733ef | 2015-10-14 18:02:43 +0200 | [diff] [blame] | 715 | ieee80211_recalc_ps(local); |
Johannes Berg | 965beda | 2009-04-16 13:17:24 +0200 | [diff] [blame] | 716 | |
Johannes Berg | 2b43631 | 2013-05-23 21:04:38 +0200 | [diff] [blame] | 717 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
| 718 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
| 719 | /* XXX: for AP_VLAN, actually track AP queues */ |
| 720 | netif_tx_start_all_queues(dev); |
| 721 | } else if (dev) { |
Johannes Berg | 2b730da | 2013-03-26 22:23:20 +0100 | [diff] [blame] | 722 | unsigned long flags; |
| 723 | int n_acs = IEEE80211_NUM_ACS; |
| 724 | int ac; |
| 725 | |
| 726 | if (local->hw.queues < IEEE80211_NUM_ACS) |
| 727 | n_acs = 1; |
| 728 | |
| 729 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 730 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || |
| 731 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && |
| 732 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { |
| 733 | for (ac = 0; ac < n_acs; ac++) { |
| 734 | int ac_queue = sdata->vif.hw_queue[ac]; |
| 735 | |
| 736 | if (local->queue_stop_reasons[ac_queue] == 0 && |
| 737 | skb_queue_empty(&local->pending[ac_queue])) |
| 738 | netif_start_subqueue(dev, ac); |
| 739 | } |
| 740 | } |
| 741 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| 742 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 743 | |
| 744 | return 0; |
| 745 | err_del_interface: |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 746 | drv_remove_interface(local, sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 747 | err_stop: |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 748 | if (!local->open_count) |
| 749 | drv_stop(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 750 | err_del_bss: |
| 751 | sdata->bss = NULL; |
Michal Kazior | 4e141da | 2014-03-05 13:14:08 +0100 | [diff] [blame] | 752 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
| 753 | mutex_lock(&local->mtx); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 754 | list_del(&sdata->u.vlan.list); |
Michal Kazior | 4e141da | 2014-03-05 13:14:08 +0100 | [diff] [blame] | 755 | mutex_unlock(&local->mtx); |
| 756 | } |
Johannes Berg | 4d6c36f | 2012-04-03 14:45:54 +0200 | [diff] [blame] | 757 | /* might already be clear but that doesn't matter */ |
Johannes Berg | 2d2080c | 2010-09-15 15:13:13 +0200 | [diff] [blame] | 758 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 759 | return res; |
| 760 | } |
| 761 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 762 | static int ieee80211_open(struct net_device *dev) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 763 | { |
| 764 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 765 | int err; |
| 766 | |
| 767 | /* fail early if user set an invalid address */ |
Mohammed Shafi Shajakhan | 2fcf2824 | 2011-07-12 15:19:04 +0530 | [diff] [blame] | 768 | if (!is_valid_ether_addr(dev->dev_addr)) |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 769 | return -EADDRNOTAVAIL; |
| 770 | |
| 771 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); |
| 772 | if (err) |
| 773 | return err; |
| 774 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 775 | return ieee80211_do_open(&sdata->wdev, true); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, |
| 779 | bool going_down) |
| 780 | { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 781 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 782 | unsigned long flags; |
| 783 | struct sk_buff *skb, *tmp; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 784 | u32 hw_reconf_flags = 0; |
Johannes Berg | 09f4114 | 2012-12-13 23:26:57 +0100 | [diff] [blame] | 785 | int i, flushed; |
Michael Braun | 397a7a2 | 2013-02-13 16:49:15 +0100 | [diff] [blame] | 786 | struct ps_data *ps; |
Janusz Dziedzic | d2859df | 2013-11-06 13:55:51 +0100 | [diff] [blame] | 787 | struct cfg80211_chan_def chandef; |
Johannes Berg | 4623884 | 2014-10-21 20:56:42 +0200 | [diff] [blame] | 788 | bool cancel_scan; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 789 | |
Rajkumar Manoharan | c29acf2 | 2011-05-14 09:43:28 +0530 | [diff] [blame] | 790 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
| 791 | |
Johannes Berg | 4623884 | 2014-10-21 20:56:42 +0200 | [diff] [blame] | 792 | cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; |
| 793 | if (cancel_scan) |
Brian Cavagnolo | 352ffad | 2010-11-04 16:59:28 -0700 | [diff] [blame] | 794 | ieee80211_scan_cancel(local); |
| 795 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 796 | /* |
| 797 | * Stop TX on this interface first. |
| 798 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 799 | if (sdata->dev) |
| 800 | netif_tx_stop_all_queues(sdata->dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 801 | |
Johannes Berg | c8f994e | 2013-03-27 22:49:19 +0100 | [diff] [blame] | 802 | ieee80211_roc_purge(local, sdata); |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 803 | |
Emmanuel Grumbach | 8ffcc70 | 2014-01-23 14:28:16 +0200 | [diff] [blame] | 804 | switch (sdata->vif.type) { |
| 805 | case NL80211_IFTYPE_STATION: |
Johannes Berg | 572078b | 2013-02-15 11:47:50 +0100 | [diff] [blame] | 806 | ieee80211_mgd_stop(sdata); |
Emmanuel Grumbach | 8ffcc70 | 2014-01-23 14:28:16 +0200 | [diff] [blame] | 807 | break; |
| 808 | case NL80211_IFTYPE_ADHOC: |
Simon Wunderlich | cd7760e | 2013-08-28 13:41:31 +0200 | [diff] [blame] | 809 | ieee80211_ibss_stop(sdata); |
Emmanuel Grumbach | 8ffcc70 | 2014-01-23 14:28:16 +0200 | [diff] [blame] | 810 | break; |
| 811 | case NL80211_IFTYPE_AP: |
| 812 | cancel_work_sync(&sdata->u.ap.request_smps_work); |
| 813 | break; |
| 814 | default: |
| 815 | break; |
| 816 | } |
Simon Wunderlich | cd7760e | 2013-08-28 13:41:31 +0200 | [diff] [blame] | 817 | |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 818 | /* |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 819 | * Remove all stations associated with this interface. |
| 820 | * |
| 821 | * This must be done before calling ops->remove_interface() |
| 822 | * because otherwise we can later invoke ops->sta_notify() |
| 823 | * whenever the STAs are removed, and that invalidates driver |
| 824 | * assumptions about always getting a vif pointer that is valid |
| 825 | * (because if we remove a STA after ops->remove_interface() |
| 826 | * the driver will have removed the vif info already!) |
| 827 | * |
Johannes Berg | 5eb8f4d | 2015-04-13 14:56:51 +0200 | [diff] [blame] | 828 | * In WDS mode a station must exist here and be flushed, for |
| 829 | * AP_VLANs stations may exist since there's nothing else that |
| 830 | * would have removed them, but in other modes there shouldn't |
| 831 | * be any stations. |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 832 | */ |
Johannes Berg | d34ba21 | 2013-12-04 22:46:11 +0100 | [diff] [blame] | 833 | flushed = sta_info_flush(sdata); |
Johannes Berg | 5eb8f4d | 2015-04-13 14:56:51 +0200 | [diff] [blame] | 834 | WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
| 835 | ((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || |
| 836 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1))); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 837 | |
Johannes Berg | df14046 | 2015-04-22 14:40:58 +0200 | [diff] [blame] | 838 | /* don't count this interface for allmulti while it is down */ |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 839 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 840 | atomic_dec(&local->iff_allmultis); |
| 841 | |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 842 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 843 | local->fif_pspoll--; |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 844 | local->fif_probe_req--; |
| 845 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
| 846 | local->fif_probe_req--; |
| 847 | } |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 848 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 849 | if (sdata->dev) { |
| 850 | netif_addr_lock_bh(sdata->dev); |
| 851 | spin_lock_bh(&local->filter_lock); |
| 852 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
| 853 | sdata->dev->addr_len); |
| 854 | spin_unlock_bh(&local->filter_lock); |
| 855 | netif_addr_unlock_bh(sdata->dev); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 856 | } |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 857 | |
Vivek Natarajan | 7cbf0ba | 2008-12-24 00:34:37 -0800 | [diff] [blame] | 858 | del_timer_sync(&local->dynamic_ps_timer); |
| 859 | cancel_work_sync(&local->dynamic_ps_enable_work); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 860 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 861 | cancel_work_sync(&sdata->recalc_smps); |
Michal Kazior | dbd7285 | 2014-01-29 07:56:21 +0100 | [diff] [blame] | 862 | sdata_lock(sdata); |
Michal Kazior | 59af692 | 2014-04-09 15:10:59 +0200 | [diff] [blame] | 863 | mutex_lock(&local->mtx); |
Simon Wunderlich | 73da7d5 | 2013-07-11 16:09:06 +0200 | [diff] [blame] | 864 | sdata->vif.csa_active = false; |
Luciano Coelho | 0c21e63 | 2014-10-08 09:48:39 +0300 | [diff] [blame] | 865 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
| 866 | sdata->u.mgd.csa_waiting_bcn = false; |
Luciano Coelho | a46992b | 2014-06-13 16:30:07 +0300 | [diff] [blame] | 867 | if (sdata->csa_block_tx) { |
| 868 | ieee80211_wake_vif_queues(local, sdata, |
| 869 | IEEE80211_QUEUE_STOP_REASON_CSA); |
| 870 | sdata->csa_block_tx = false; |
| 871 | } |
Michal Kazior | 59af692 | 2014-04-09 15:10:59 +0200 | [diff] [blame] | 872 | mutex_unlock(&local->mtx); |
Michal Kazior | dbd7285 | 2014-01-29 07:56:21 +0100 | [diff] [blame] | 873 | sdata_unlock(sdata); |
Michal Kazior | 59af692 | 2014-04-09 15:10:59 +0200 | [diff] [blame] | 874 | |
Simon Wunderlich | 73da7d5 | 2013-07-11 16:09:06 +0200 | [diff] [blame] | 875 | cancel_work_sync(&sdata->csa_finalize_work); |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 876 | |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 877 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
| 878 | |
| 879 | if (sdata->wdev.cac_started) { |
Janusz Dziedzic | d2859df | 2013-11-06 13:55:51 +0100 | [diff] [blame] | 880 | chandef = sdata->vif.bss_conf.chandef; |
Johannes Berg | b2c0958 | 2013-03-27 23:24:53 +0100 | [diff] [blame] | 881 | WARN_ON(local->suspended); |
Johannes Berg | 34a3740 | 2013-12-18 09:43:33 +0100 | [diff] [blame] | 882 | mutex_lock(&local->mtx); |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 883 | ieee80211_vif_release_channel(sdata); |
Johannes Berg | 34a3740 | 2013-12-18 09:43:33 +0100 | [diff] [blame] | 884 | mutex_unlock(&local->mtx); |
Janusz Dziedzic | d2859df | 2013-11-06 13:55:51 +0100 | [diff] [blame] | 885 | cfg80211_cac_event(sdata->dev, &chandef, |
| 886 | NL80211_RADAR_CAC_ABORTED, |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 887 | GFP_KERNEL); |
| 888 | } |
| 889 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 890 | /* APs need special treatment */ |
| 891 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Johannes Berg | 57c9fff | 2009-07-29 15:46:21 +0200 | [diff] [blame] | 892 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 893 | |
| 894 | /* down all dependent devices, that is VLANs */ |
Johannes Berg | 57c9fff | 2009-07-29 15:46:21 +0200 | [diff] [blame] | 895 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 896 | u.vlan.list) |
| 897 | dev_close(vlan->dev); |
| 898 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); |
Michael Braun | 397a7a2 | 2013-02-13 16:49:15 +0100 | [diff] [blame] | 899 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
| 900 | /* remove all packets in parent bc_buf pointing to this dev */ |
| 901 | ps = &sdata->bss->ps; |
| 902 | |
| 903 | spin_lock_irqsave(&ps->bc_buf.lock, flags); |
| 904 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { |
| 905 | if (skb->dev == sdata->dev) { |
| 906 | __skb_unlink(skb, &ps->bc_buf); |
| 907 | local->total_ps_buffered--; |
| 908 | ieee80211_free_txskb(&local->hw, skb); |
| 909 | } |
| 910 | } |
| 911 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 912 | } |
| 913 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 914 | if (going_down) |
| 915 | local->open_count--; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 916 | |
| 917 | switch (sdata->vif.type) { |
| 918 | case NL80211_IFTYPE_AP_VLAN: |
Michal Kazior | 4e141da | 2014-03-05 13:14:08 +0100 | [diff] [blame] | 919 | mutex_lock(&local->mtx); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 920 | list_del(&sdata->u.vlan.list); |
Michal Kazior | 4e141da | 2014-03-05 13:14:08 +0100 | [diff] [blame] | 921 | mutex_unlock(&local->mtx); |
Monam Agarwal | 0c2bef46 | 2014-03-24 00:51:43 +0530 | [diff] [blame] | 922 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); |
Felix Fietkau | 10b6848 | 2014-10-27 11:56:06 +0100 | [diff] [blame] | 923 | /* see comment in the default case below */ |
| 924 | ieee80211_free_keys(sdata, true); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 925 | /* no need to tell driver */ |
| 926 | break; |
| 927 | case NL80211_IFTYPE_MONITOR: |
| 928 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 929 | local->cooked_mntrs--; |
| 930 | break; |
| 931 | } |
| 932 | |
| 933 | local->monitors--; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 934 | if (local->monitors == 0) { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 935 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
| 936 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 937 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 938 | |
Christian Lamparter | 85416a4 | 2010-10-02 13:17:07 +0200 | [diff] [blame] | 939 | ieee80211_adjust_monitor_flags(sdata, -1); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 940 | break; |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 941 | case NL80211_IFTYPE_P2P_DEVICE: |
| 942 | /* relies on synchronize_rcu() below */ |
Monam Agarwal | 0c2bef46 | 2014-03-24 00:51:43 +0530 | [diff] [blame] | 943 | RCU_INIT_POINTER(local->p2p_sdata, NULL); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 944 | /* fall through */ |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 945 | default: |
Johannes Berg | 0b7dff4 | 2012-12-05 09:49:14 +0100 | [diff] [blame] | 946 | cancel_work_sync(&sdata->work); |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 947 | /* |
| 948 | * When we get here, the interface is marked down. |
Johannes Berg | 7907c7d | 2013-12-04 23:47:09 +0100 | [diff] [blame] | 949 | * Free the remaining keys, if there are any |
Felix Fietkau | 10b6848 | 2014-10-27 11:56:06 +0100 | [diff] [blame] | 950 | * (which can happen in AP mode if userspace sets |
| 951 | * keys before the interface is operating, and maybe |
| 952 | * also in WDS mode) |
Johannes Berg | 75de911 | 2012-12-14 14:56:03 +0100 | [diff] [blame] | 953 | * |
Johannes Berg | 7907c7d | 2013-12-04 23:47:09 +0100 | [diff] [blame] | 954 | * Force the key freeing to always synchronize_net() |
| 955 | * to wait for the RX path in case it is using this |
Felix Fietkau | 10b6848 | 2014-10-27 11:56:06 +0100 | [diff] [blame] | 956 | * interface enqueuing frames at this very time on |
Johannes Berg | 75de911 | 2012-12-14 14:56:03 +0100 | [diff] [blame] | 957 | * another CPU. |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 958 | */ |
Johannes Berg | 7907c7d | 2013-12-04 23:47:09 +0100 | [diff] [blame] | 959 | ieee80211_free_keys(sdata, true); |
Johannes Berg | 1861b84 | 2013-02-23 01:17:56 +0100 | [diff] [blame] | 960 | skb_queue_purge(&sdata->skb_queue); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 961 | } |
| 962 | |
| 963 | sdata->bss = NULL; |
| 964 | |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 965 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 966 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
| 967 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { |
| 968 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 969 | if (info->control.vif == &sdata->vif) { |
| 970 | __skb_unlink(skb, &local->pending[i]); |
Felix Fietkau | d4fa14c | 2012-10-10 22:40:23 +0200 | [diff] [blame] | 971 | ieee80211_free_txskb(&local->hw, skb); |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 972 | } |
| 973 | } |
| 974 | } |
| 975 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 976 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 977 | if (sdata->vif.txq) { |
| 978 | struct txq_info *txqi = to_txq_info(sdata->vif.txq); |
| 979 | |
| 980 | ieee80211_purge_tx_queue(&local->hw, &txqi->queue); |
| 981 | atomic_set(&sdata->txqs_len[txqi->txq.ac], 0); |
| 982 | } |
| 983 | |
Johannes Berg | b2c0958 | 2013-03-27 23:24:53 +0100 | [diff] [blame] | 984 | if (local->open_count == 0) |
| 985 | ieee80211_clear_tx_pending(local); |
| 986 | |
| 987 | /* |
| 988 | * If the interface goes down while suspended, presumably because |
| 989 | * the device was unplugged and that happens before our resume, |
| 990 | * then the driver is already unconfigured and the remainder of |
| 991 | * this function isn't needed. |
| 992 | * XXX: what about WoWLAN? If the device has software state, e.g. |
| 993 | * memory allocated, it might expect teardown commands from |
| 994 | * mac80211 here? |
| 995 | */ |
| 996 | if (local->suspended) { |
| 997 | WARN_ON(local->wowlan); |
| 998 | WARN_ON(rtnl_dereference(local->monitor_sdata)); |
| 999 | return; |
| 1000 | } |
| 1001 | |
| 1002 | switch (sdata->vif.type) { |
| 1003 | case NL80211_IFTYPE_AP_VLAN: |
| 1004 | break; |
| 1005 | case NL80211_IFTYPE_MONITOR: |
| 1006 | if (local->monitors == 0) |
| 1007 | ieee80211_del_virtual_monitor(local); |
| 1008 | |
| 1009 | mutex_lock(&local->mtx); |
| 1010 | ieee80211_recalc_idle(local); |
| 1011 | mutex_unlock(&local->mtx); |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 1012 | |
| 1013 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) |
| 1014 | break; |
| 1015 | |
| 1016 | /* fall through */ |
Johannes Berg | b2c0958 | 2013-03-27 23:24:53 +0100 | [diff] [blame] | 1017 | default: |
| 1018 | if (going_down) |
| 1019 | drv_remove_interface(local, sdata); |
| 1020 | } |
| 1021 | |
Johannes Berg | 4a733ef | 2015-10-14 18:02:43 +0200 | [diff] [blame] | 1022 | ieee80211_recalc_ps(local); |
Johannes Berg | b2c0958 | 2013-03-27 23:24:53 +0100 | [diff] [blame] | 1023 | |
Johannes Berg | 4623884 | 2014-10-21 20:56:42 +0200 | [diff] [blame] | 1024 | if (cancel_scan) |
| 1025 | flush_delayed_work(&local->scan_work); |
| 1026 | |
Johannes Berg | b2c0958 | 2013-03-27 23:24:53 +0100 | [diff] [blame] | 1027 | if (local->open_count == 0) { |
| 1028 | ieee80211_stop_device(local); |
| 1029 | |
| 1030 | /* no reconfiguring after stop! */ |
| 1031 | return; |
| 1032 | } |
| 1033 | |
| 1034 | /* do after stop to avoid reconfiguring when we stop anyway */ |
| 1035 | ieee80211_configure_filter(local); |
| 1036 | ieee80211_hw_config(local, hw_reconf_flags); |
| 1037 | |
| 1038 | if (local->monitors == local->open_count) |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 1039 | ieee80211_add_virtual_monitor(local); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1040 | } |
| 1041 | |
| 1042 | static int ieee80211_stop(struct net_device *dev) |
| 1043 | { |
| 1044 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 1045 | |
| 1046 | ieee80211_do_stop(sdata, true); |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 1047 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 1048 | return 0; |
| 1049 | } |
| 1050 | |
| 1051 | static void ieee80211_set_multicast_list(struct net_device *dev) |
| 1052 | { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 1053 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | b4a4bf5 | 2008-09-26 13:34:54 +0200 | [diff] [blame] | 1054 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | df14046 | 2015-04-22 14:40:58 +0200 | [diff] [blame] | 1055 | int allmulti, sdata_allmulti; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 1056 | |
| 1057 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 1058 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 1059 | |
| 1060 | if (allmulti != sdata_allmulti) { |
| 1061 | if (dev->flags & IFF_ALLMULTI) |
| 1062 | atomic_inc(&local->iff_allmultis); |
| 1063 | else |
| 1064 | atomic_dec(&local->iff_allmultis); |
| 1065 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
| 1066 | } |
| 1067 | |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 1068 | spin_lock_bh(&local->filter_lock); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1069 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 1070 | spin_unlock_bh(&local->filter_lock); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1071 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 1072 | } |
| 1073 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1074 | /* |
| 1075 | * Called when the netdev is removed or, by the code below, before |
| 1076 | * the interface type changes. |
| 1077 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1078 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1079 | { |
| 1080 | int i; |
| 1081 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1082 | /* free extra data */ |
Johannes Berg | 7907c7d | 2013-12-04 23:47:09 +0100 | [diff] [blame] | 1083 | ieee80211_free_keys(sdata, false); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1084 | |
Jouni Malinen | aee14ce | 2008-09-09 16:33:15 +0200 | [diff] [blame] | 1085 | ieee80211_debugfs_remove_netdev(sdata); |
| 1086 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 1087 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1088 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1089 | sdata->fragment_next = 0; |
| 1090 | |
Johannes Berg | b9dcf71 | 2010-08-27 12:35:54 +0200 | [diff] [blame] | 1091 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 1092 | mesh_rmc_free(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1093 | } |
| 1094 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1095 | static void ieee80211_uninit(struct net_device *dev) |
| 1096 | { |
| 1097 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); |
| 1098 | } |
| 1099 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1100 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 1101 | struct sk_buff *skb, |
Daniel Borkmann | 99932d4 | 2014-02-16 15:55:20 +0100 | [diff] [blame] | 1102 | void *accel_priv, |
| 1103 | select_queue_fallback_t fallback) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1104 | { |
| 1105 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); |
| 1106 | } |
| 1107 | |
Johannes Berg | 5a49051 | 2015-04-22 17:10:38 +0200 | [diff] [blame] | 1108 | static struct rtnl_link_stats64 * |
| 1109 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
| 1110 | { |
| 1111 | int i; |
| 1112 | |
| 1113 | for_each_possible_cpu(i) { |
| 1114 | const struct pcpu_sw_netstats *tstats; |
| 1115 | u64 rx_packets, rx_bytes, tx_packets, tx_bytes; |
| 1116 | unsigned int start; |
| 1117 | |
| 1118 | tstats = per_cpu_ptr(dev->tstats, i); |
| 1119 | |
| 1120 | do { |
| 1121 | start = u64_stats_fetch_begin_irq(&tstats->syncp); |
| 1122 | rx_packets = tstats->rx_packets; |
| 1123 | tx_packets = tstats->tx_packets; |
| 1124 | rx_bytes = tstats->rx_bytes; |
| 1125 | tx_bytes = tstats->tx_bytes; |
| 1126 | } while (u64_stats_fetch_retry_irq(&tstats->syncp, start)); |
| 1127 | |
| 1128 | stats->rx_packets += rx_packets; |
| 1129 | stats->tx_packets += tx_packets; |
| 1130 | stats->rx_bytes += rx_bytes; |
| 1131 | stats->tx_bytes += tx_bytes; |
| 1132 | } |
| 1133 | |
| 1134 | return stats; |
| 1135 | } |
| 1136 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1137 | static const struct net_device_ops ieee80211_dataif_ops = { |
| 1138 | .ndo_open = ieee80211_open, |
| 1139 | .ndo_stop = ieee80211_stop, |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1140 | .ndo_uninit = ieee80211_uninit, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1141 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1142 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1143 | .ndo_change_mtu = ieee80211_change_mtu, |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1144 | .ndo_set_mac_address = ieee80211_change_mac, |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1145 | .ndo_select_queue = ieee80211_netdev_select_queue, |
Johannes Berg | 5a49051 | 2015-04-22 17:10:38 +0200 | [diff] [blame] | 1146 | .ndo_get_stats64 = ieee80211_get_stats64, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1147 | }; |
| 1148 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1149 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 1150 | struct sk_buff *skb, |
Daniel Borkmann | 99932d4 | 2014-02-16 15:55:20 +0100 | [diff] [blame] | 1151 | void *accel_priv, |
| 1152 | select_queue_fallback_t fallback) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1153 | { |
| 1154 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 1155 | struct ieee80211_local *local = sdata->local; |
| 1156 | struct ieee80211_hdr *hdr; |
| 1157 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; |
| 1158 | |
Johannes Berg | 32c5057 | 2012-03-28 11:04:29 +0200 | [diff] [blame] | 1159 | if (local->hw.queues < IEEE80211_NUM_ACS) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1160 | return 0; |
| 1161 | |
| 1162 | if (skb->len < 4 || |
Johannes Berg | b49bb57 | 2010-01-08 19:00:00 +0100 | [diff] [blame] | 1163 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1164 | return 0; /* doesn't matter, frame will be dropped */ |
| 1165 | |
Johannes Berg | b49bb57 | 2010-01-08 19:00:00 +0100 | [diff] [blame] | 1166 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1167 | |
Yoni Divinsky | 00e96de | 2012-06-20 15:39:13 +0300 | [diff] [blame] | 1168 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1169 | } |
| 1170 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1171 | static const struct net_device_ops ieee80211_monitorif_ops = { |
| 1172 | .ndo_open = ieee80211_open, |
| 1173 | .ndo_stop = ieee80211_stop, |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1174 | .ndo_uninit = ieee80211_uninit, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1175 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1176 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1177 | .ndo_change_mtu = ieee80211_change_mtu, |
Felix Fietkau | 31eba5b | 2013-05-28 13:01:53 +0200 | [diff] [blame] | 1178 | .ndo_set_mac_address = ieee80211_change_mac, |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1179 | .ndo_select_queue = ieee80211_monitor_select_queue, |
Johannes Berg | 5a49051 | 2015-04-22 17:10:38 +0200 | [diff] [blame] | 1180 | .ndo_get_stats64 = ieee80211_get_stats64, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1181 | }; |
| 1182 | |
Johannes Berg | 5a49051 | 2015-04-22 17:10:38 +0200 | [diff] [blame] | 1183 | static void ieee80211_if_free(struct net_device *dev) |
| 1184 | { |
| 1185 | free_percpu(dev->tstats); |
| 1186 | free_netdev(dev); |
| 1187 | } |
| 1188 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1189 | static void ieee80211_if_setup(struct net_device *dev) |
| 1190 | { |
| 1191 | ether_setup(dev); |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 1192 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1193 | dev->netdev_ops = &ieee80211_dataif_ops; |
Johannes Berg | 5a49051 | 2015-04-22 17:10:38 +0200 | [diff] [blame] | 1194 | dev->destructor = ieee80211_if_free; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1195 | } |
| 1196 | |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1197 | static void ieee80211_iface_work(struct work_struct *work) |
| 1198 | { |
| 1199 | struct ieee80211_sub_if_data *sdata = |
| 1200 | container_of(work, struct ieee80211_sub_if_data, work); |
| 1201 | struct ieee80211_local *local = sdata->local; |
| 1202 | struct sk_buff *skb; |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1203 | struct sta_info *sta; |
Johannes Berg | c1475ca | 2010-06-10 10:21:37 +0200 | [diff] [blame] | 1204 | struct ieee80211_ra_tid *ra_tid; |
Michal Kazior | 08cf42e | 2014-07-16 12:12:15 +0200 | [diff] [blame] | 1205 | struct ieee80211_rx_agg *rx_agg; |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1206 | |
| 1207 | if (!ieee80211_sdata_running(sdata)) |
| 1208 | return; |
| 1209 | |
Andrei Otcheretianski | fc58c47 | 2015-08-15 22:04:01 +0300 | [diff] [blame] | 1210 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1211 | return; |
| 1212 | |
Emmanuel Grumbach | 4afaff1 | 2015-01-22 23:32:46 +0200 | [diff] [blame] | 1213 | if (!ieee80211_can_run_worker(local)) |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1214 | return; |
| 1215 | |
| 1216 | /* first process frames */ |
| 1217 | while ((skb = skb_dequeue(&sdata->skb_queue))) { |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1218 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
| 1219 | |
Johannes Berg | c1475ca | 2010-06-10 10:21:37 +0200 | [diff] [blame] | 1220 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
| 1221 | ra_tid = (void *)&skb->cb; |
| 1222 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, |
| 1223 | ra_tid->tid); |
| 1224 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { |
| 1225 | ra_tid = (void *)&skb->cb; |
| 1226 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, |
| 1227 | ra_tid->tid); |
Michal Kazior | 08cf42e | 2014-07-16 12:12:15 +0200 | [diff] [blame] | 1228 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_START) { |
| 1229 | rx_agg = (void *)&skb->cb; |
| 1230 | mutex_lock(&local->sta_mtx); |
| 1231 | sta = sta_info_get_bss(sdata, rx_agg->addr); |
Michal Kazior | 4549cf2 | 2014-09-02 14:05:10 +0200 | [diff] [blame] | 1232 | if (sta) |
Michal Kazior | 08cf42e | 2014-07-16 12:12:15 +0200 | [diff] [blame] | 1233 | __ieee80211_start_rx_ba_session(sta, |
Michal Kazior | 4549cf2 | 2014-09-02 14:05:10 +0200 | [diff] [blame] | 1234 | 0, 0, 0, 1, rx_agg->tid, |
Michal Kazior | 08cf42e | 2014-07-16 12:12:15 +0200 | [diff] [blame] | 1235 | IEEE80211_MAX_AMPDU_BUF, |
Michal Kazior | 4549cf2 | 2014-09-02 14:05:10 +0200 | [diff] [blame] | 1236 | false, true); |
Michal Kazior | 08cf42e | 2014-07-16 12:12:15 +0200 | [diff] [blame] | 1237 | mutex_unlock(&local->sta_mtx); |
| 1238 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_STOP) { |
| 1239 | rx_agg = (void *)&skb->cb; |
| 1240 | mutex_lock(&local->sta_mtx); |
| 1241 | sta = sta_info_get_bss(sdata, rx_agg->addr); |
| 1242 | if (sta) |
| 1243 | __ieee80211_stop_rx_ba_session(sta, |
| 1244 | rx_agg->tid, |
| 1245 | WLAN_BACK_RECIPIENT, 0, |
| 1246 | false); |
| 1247 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | c1475ca | 2010-06-10 10:21:37 +0200 | [diff] [blame] | 1248 | } else if (ieee80211_is_action(mgmt->frame_control) && |
| 1249 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1250 | int len = skb->len; |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1251 | |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1252 | mutex_lock(&local->sta_mtx); |
Felix Fietkau | 875ae5f | 2010-07-17 15:59:07 +0200 | [diff] [blame] | 1253 | sta = sta_info_get_bss(sdata, mgmt->sa); |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1254 | if (sta) { |
| 1255 | switch (mgmt->u.action.u.addba_req.action_code) { |
| 1256 | case WLAN_ACTION_ADDBA_REQ: |
| 1257 | ieee80211_process_addba_request( |
| 1258 | local, sta, mgmt, len); |
| 1259 | break; |
| 1260 | case WLAN_ACTION_ADDBA_RESP: |
| 1261 | ieee80211_process_addba_resp(local, sta, |
| 1262 | mgmt, len); |
| 1263 | break; |
| 1264 | case WLAN_ACTION_DELBA: |
| 1265 | ieee80211_process_delba(sdata, sta, |
| 1266 | mgmt, len); |
| 1267 | break; |
| 1268 | default: |
| 1269 | WARN_ON(1); |
| 1270 | break; |
| 1271 | } |
| 1272 | } |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1273 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1274 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
| 1275 | struct ieee80211_hdr *hdr = (void *)mgmt; |
| 1276 | /* |
| 1277 | * So the frame isn't mgmt, but frame_control |
| 1278 | * is at the right place anyway, of course, so |
| 1279 | * the if statement is correct. |
| 1280 | * |
| 1281 | * Warn if we have other data frame types here, |
| 1282 | * they must not get here. |
| 1283 | */ |
| 1284 | WARN_ON(hdr->frame_control & |
| 1285 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); |
| 1286 | WARN_ON(!(hdr->seq_ctrl & |
| 1287 | cpu_to_le16(IEEE80211_SCTL_FRAG))); |
| 1288 | /* |
| 1289 | * This was a fragment of a frame, received while |
| 1290 | * a block-ack session was active. That cannot be |
| 1291 | * right, so terminate the session. |
| 1292 | */ |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1293 | mutex_lock(&local->sta_mtx); |
Felix Fietkau | 875ae5f | 2010-07-17 15:59:07 +0200 | [diff] [blame] | 1294 | sta = sta_info_get_bss(sdata, mgmt->sa); |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1295 | if (sta) { |
| 1296 | u16 tid = *ieee80211_get_qos_ctl(hdr) & |
| 1297 | IEEE80211_QOS_CTL_TID_MASK; |
| 1298 | |
| 1299 | __ieee80211_stop_rx_ba_session( |
| 1300 | sta, tid, WLAN_BACK_RECIPIENT, |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 1301 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
| 1302 | true); |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1303 | } |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1304 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1305 | } else switch (sdata->vif.type) { |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1306 | case NL80211_IFTYPE_STATION: |
| 1307 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
| 1308 | break; |
| 1309 | case NL80211_IFTYPE_ADHOC: |
| 1310 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); |
| 1311 | break; |
| 1312 | case NL80211_IFTYPE_MESH_POINT: |
| 1313 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
| 1314 | break; |
| 1315 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); |
| 1316 | break; |
| 1317 | default: |
| 1318 | WARN(1, "frame for unexpected interface type"); |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1319 | break; |
| 1320 | } |
Johannes Berg | 36b3a62 | 2010-06-10 10:21:33 +0200 | [diff] [blame] | 1321 | |
| 1322 | kfree_skb(skb); |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1323 | } |
| 1324 | |
| 1325 | /* then other type-dependent work */ |
| 1326 | switch (sdata->vif.type) { |
| 1327 | case NL80211_IFTYPE_STATION: |
| 1328 | ieee80211_sta_work(sdata); |
| 1329 | break; |
| 1330 | case NL80211_IFTYPE_ADHOC: |
| 1331 | ieee80211_ibss_work(sdata); |
| 1332 | break; |
| 1333 | case NL80211_IFTYPE_MESH_POINT: |
| 1334 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
| 1335 | break; |
| 1336 | ieee80211_mesh_work(sdata); |
| 1337 | break; |
Rostislav Lisovy | 239281f | 2014-11-03 10:33:19 +0100 | [diff] [blame] | 1338 | case NL80211_IFTYPE_OCB: |
| 1339 | ieee80211_ocb_work(sdata); |
| 1340 | break; |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1341 | default: |
| 1342 | break; |
| 1343 | } |
| 1344 | } |
| 1345 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1346 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
| 1347 | { |
| 1348 | struct ieee80211_sub_if_data *sdata = |
| 1349 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); |
| 1350 | |
| 1351 | ieee80211_recalc_smps(sdata); |
| 1352 | } |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1353 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1354 | /* |
| 1355 | * Helper function to initialise an interface to a specific type. |
| 1356 | */ |
| 1357 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1358 | enum nl80211_iftype type) |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1359 | { |
Rostislav Lisovy | 239281f | 2014-11-03 10:33:19 +0100 | [diff] [blame] | 1360 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
| 1361 | 0xff, 0xff, 0xff}; |
| 1362 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1363 | /* clear type-dependent union */ |
| 1364 | memset(&sdata->u, 0, sizeof(sdata->u)); |
| 1365 | |
| 1366 | /* and set some type-dependent values */ |
| 1367 | sdata->vif.type = type; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1368 | sdata->vif.p2p = false; |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 1369 | sdata->wdev.iftype = type; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1370 | |
Johannes Berg | a621fa4 | 2010-08-27 14:26:54 +0300 | [diff] [blame] | 1371 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
| 1372 | sdata->control_port_no_encrypt = false; |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 1373 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
Avraham Stern | d3a58df | 2014-05-22 12:17:47 +0300 | [diff] [blame] | 1374 | sdata->vif.bss_conf.idle = true; |
Johannes Berg | a621fa4 | 2010-08-27 14:26:54 +0300 | [diff] [blame] | 1375 | |
Simon Wunderlich | b53be79 | 2011-11-18 14:20:44 +0100 | [diff] [blame] | 1376 | sdata->noack_map = 0; |
| 1377 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1378 | /* only monitor/p2p-device differ */ |
| 1379 | if (sdata->dev) { |
| 1380 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
| 1381 | sdata->dev->type = ARPHRD_ETHER; |
| 1382 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1383 | |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 1384 | skb_queue_head_init(&sdata->skb_queue); |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1385 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1386 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
Simon Wunderlich | 73da7d5 | 2013-07-11 16:09:06 +0200 | [diff] [blame] | 1387 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
Michal Kazior | 484298a | 2014-04-09 15:29:26 +0200 | [diff] [blame] | 1388 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
Michal Kazior | e3afb92 | 2014-04-09 15:29:27 +0200 | [diff] [blame] | 1389 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 1390 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1391 | switch (type) { |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1392 | case NL80211_IFTYPE_P2P_GO: |
| 1393 | type = NL80211_IFTYPE_AP; |
| 1394 | sdata->vif.type = type; |
| 1395 | sdata->vif.p2p = true; |
| 1396 | /* fall through */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1397 | case NL80211_IFTYPE_AP: |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 1398 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1399 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 1400 | INIT_WORK(&sdata->u.ap.request_smps_work, |
| 1401 | ieee80211_request_smps_ap_work); |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1402 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 1403 | sdata->u.ap.req_smps = IEEE80211_SMPS_OFF; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1404 | break; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1405 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1406 | type = NL80211_IFTYPE_STATION; |
| 1407 | sdata->vif.type = type; |
| 1408 | sdata->vif.p2p = true; |
| 1409 | /* fall through */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1410 | case NL80211_IFTYPE_STATION: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1411 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 1412 | ieee80211_sta_setup_sdata(sdata); |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 1413 | break; |
Rostislav Lisovy | 6e0bd6c | 2014-11-03 10:33:18 +0100 | [diff] [blame] | 1414 | case NL80211_IFTYPE_OCB: |
Rostislav Lisovy | 239281f | 2014-11-03 10:33:19 +0100 | [diff] [blame] | 1415 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
| 1416 | ieee80211_ocb_setup_sdata(sdata); |
Rostislav Lisovy | 6e0bd6c | 2014-11-03 10:33:18 +0100 | [diff] [blame] | 1417 | break; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1418 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1419 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1420 | ieee80211_ibss_setup_sdata(sdata); |
| 1421 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1422 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1423 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 1424 | ieee80211_mesh_init_sdata(sdata); |
| 1425 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1426 | case NL80211_IFTYPE_MONITOR: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1427 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1428 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1429 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
| 1430 | MONITOR_FLAG_OTHER_BSS; |
| 1431 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1432 | case NL80211_IFTYPE_WDS: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1433 | sdata->vif.bss_conf.bssid = NULL; |
| 1434 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1435 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 1436 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1437 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1438 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1439 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 1440 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1441 | BUG(); |
| 1442 | break; |
| 1443 | } |
| 1444 | |
| 1445 | ieee80211_debugfs_add_netdev(sdata); |
| 1446 | } |
| 1447 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1448 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
| 1449 | enum nl80211_iftype type) |
| 1450 | { |
| 1451 | struct ieee80211_local *local = sdata->local; |
| 1452 | int ret, err; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1453 | enum nl80211_iftype internal_type = type; |
| 1454 | bool p2p = false; |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1455 | |
| 1456 | ASSERT_RTNL(); |
| 1457 | |
| 1458 | if (!local->ops->change_interface) |
| 1459 | return -EBUSY; |
| 1460 | |
| 1461 | switch (sdata->vif.type) { |
| 1462 | case NL80211_IFTYPE_AP: |
| 1463 | case NL80211_IFTYPE_STATION: |
| 1464 | case NL80211_IFTYPE_ADHOC: |
Rostislav Lisovy | 239281f | 2014-11-03 10:33:19 +0100 | [diff] [blame] | 1465 | case NL80211_IFTYPE_OCB: |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1466 | /* |
| 1467 | * Could maybe also all others here? |
| 1468 | * Just not sure how that interacts |
| 1469 | * with the RX/config path e.g. for |
| 1470 | * mesh. |
| 1471 | */ |
| 1472 | break; |
| 1473 | default: |
| 1474 | return -EBUSY; |
| 1475 | } |
| 1476 | |
| 1477 | switch (type) { |
| 1478 | case NL80211_IFTYPE_AP: |
| 1479 | case NL80211_IFTYPE_STATION: |
| 1480 | case NL80211_IFTYPE_ADHOC: |
Rostislav Lisovy | 239281f | 2014-11-03 10:33:19 +0100 | [diff] [blame] | 1481 | case NL80211_IFTYPE_OCB: |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1482 | /* |
| 1483 | * Could probably support everything |
| 1484 | * but WDS here (WDS do_open can fail |
| 1485 | * under memory pressure, which this |
| 1486 | * code isn't prepared to handle). |
| 1487 | */ |
| 1488 | break; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1489 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1490 | p2p = true; |
| 1491 | internal_type = NL80211_IFTYPE_STATION; |
| 1492 | break; |
| 1493 | case NL80211_IFTYPE_P2P_GO: |
| 1494 | p2p = true; |
| 1495 | internal_type = NL80211_IFTYPE_AP; |
| 1496 | break; |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1497 | default: |
| 1498 | return -EBUSY; |
| 1499 | } |
| 1500 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1501 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1502 | if (ret) |
| 1503 | return ret; |
| 1504 | |
| 1505 | ieee80211_do_stop(sdata, false); |
| 1506 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1507 | ieee80211_teardown_sdata(sdata); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1508 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1509 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1510 | if (ret) |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 1511 | type = ieee80211_vif_type_p2p(&sdata->vif); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1512 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 1513 | /* |
| 1514 | * Ignore return value here, there's not much we can do since |
| 1515 | * the driver changed the interface type internally already. |
| 1516 | * The warnings will hopefully make driver authors fix it :-) |
| 1517 | */ |
Johannes Berg | a986553 | 2013-08-26 09:30:32 +0200 | [diff] [blame] | 1518 | ieee80211_check_queues(sdata, type); |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 1519 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1520 | ieee80211_setup_sdata(sdata, type); |
| 1521 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1522 | err = ieee80211_do_open(&sdata->wdev, false); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1523 | WARN(err, "type change: do_open returned %d", err); |
| 1524 | |
| 1525 | return ret; |
| 1526 | } |
| 1527 | |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1528 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1529 | enum nl80211_iftype type) |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1530 | { |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1531 | int ret; |
| 1532 | |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1533 | ASSERT_RTNL(); |
| 1534 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1535 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1536 | return 0; |
| 1537 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1538 | if (ieee80211_sdata_running(sdata)) { |
| 1539 | ret = ieee80211_runtime_change_iftype(sdata, type); |
| 1540 | if (ret) |
| 1541 | return ret; |
| 1542 | } else { |
| 1543 | /* Purge and reset type-dependent state. */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1544 | ieee80211_teardown_sdata(sdata); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1545 | ieee80211_setup_sdata(sdata, type); |
| 1546 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1547 | |
| 1548 | /* reset some values that shouldn't be kept across type changes */ |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 1549 | if (type == NL80211_IFTYPE_STATION) |
| 1550 | sdata->u.mgd.use_4addr = false; |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1551 | |
| 1552 | return 0; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1553 | } |
| 1554 | |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1555 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1556 | u8 *perm_addr, enum nl80211_iftype type) |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1557 | { |
| 1558 | struct ieee80211_sub_if_data *sdata; |
| 1559 | u64 mask, start, addr, val, inc; |
| 1560 | u8 *m; |
| 1561 | u8 tmp_addr[ETH_ALEN]; |
| 1562 | int i; |
| 1563 | |
| 1564 | /* default ... something at least */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1565 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1566 | |
| 1567 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && |
| 1568 | local->hw.wiphy->n_addresses <= 1) |
| 1569 | return; |
| 1570 | |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1571 | mutex_lock(&local->iflist_mtx); |
| 1572 | |
| 1573 | switch (type) { |
| 1574 | case NL80211_IFTYPE_MONITOR: |
| 1575 | /* doesn't matter */ |
| 1576 | break; |
| 1577 | case NL80211_IFTYPE_WDS: |
| 1578 | case NL80211_IFTYPE_AP_VLAN: |
| 1579 | /* match up with an AP interface */ |
| 1580 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1581 | if (sdata->vif.type != NL80211_IFTYPE_AP) |
| 1582 | continue; |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1583 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1584 | break; |
| 1585 | } |
| 1586 | /* keep default if no AP interface present */ |
| 1587 | break; |
Johannes Berg | 6d71117 | 2012-06-19 17:19:44 +0200 | [diff] [blame] | 1588 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1589 | case NL80211_IFTYPE_P2P_GO: |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 1590 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
Johannes Berg | 6d71117 | 2012-06-19 17:19:44 +0200 | [diff] [blame] | 1591 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1592 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
| 1593 | continue; |
| 1594 | if (!ieee80211_sdata_running(sdata)) |
| 1595 | continue; |
| 1596 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
| 1597 | goto out_unlock; |
| 1598 | } |
| 1599 | } |
| 1600 | /* otherwise fall through */ |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1601 | default: |
| 1602 | /* assign a new address if possible -- try n_addresses first */ |
| 1603 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { |
| 1604 | bool used = false; |
| 1605 | |
| 1606 | list_for_each_entry(sdata, &local->interfaces, list) { |
dingtianhong | 496d7e8 | 2013-12-26 19:40:56 +0800 | [diff] [blame] | 1607 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
| 1608 | sdata->vif.addr)) { |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1609 | used = true; |
| 1610 | break; |
| 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | if (!used) { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1615 | memcpy(perm_addr, |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1616 | local->hw.wiphy->addresses[i].addr, |
| 1617 | ETH_ALEN); |
| 1618 | break; |
| 1619 | } |
| 1620 | } |
| 1621 | |
| 1622 | /* try mask if available */ |
| 1623 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) |
| 1624 | break; |
| 1625 | |
| 1626 | m = local->hw.wiphy->addr_mask; |
| 1627 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 1628 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 1629 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 1630 | |
| 1631 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { |
| 1632 | /* not a contiguous mask ... not handled now! */ |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1633 | pr_info("not contiguous\n"); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1634 | break; |
| 1635 | } |
| 1636 | |
Helmut Schaa | ac20976 | 2013-05-27 10:43:09 +0200 | [diff] [blame] | 1637 | /* |
| 1638 | * Pick address of existing interface in case user changed |
| 1639 | * MAC address manually, default to perm_addr. |
| 1640 | */ |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1641 | m = local->hw.wiphy->perm_addr; |
Helmut Schaa | ac20976 | 2013-05-27 10:43:09 +0200 | [diff] [blame] | 1642 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1643 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) |
| 1644 | continue; |
| 1645 | m = sdata->vif.addr; |
| 1646 | break; |
| 1647 | } |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1648 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 1649 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 1650 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 1651 | |
| 1652 | inc = 1ULL<<__ffs64(mask); |
| 1653 | val = (start & mask); |
| 1654 | addr = (start & ~mask) | (val & mask); |
| 1655 | do { |
| 1656 | bool used = false; |
| 1657 | |
| 1658 | tmp_addr[5] = addr >> 0*8; |
| 1659 | tmp_addr[4] = addr >> 1*8; |
| 1660 | tmp_addr[3] = addr >> 2*8; |
| 1661 | tmp_addr[2] = addr >> 3*8; |
| 1662 | tmp_addr[1] = addr >> 4*8; |
| 1663 | tmp_addr[0] = addr >> 5*8; |
| 1664 | |
| 1665 | val += inc; |
| 1666 | |
| 1667 | list_for_each_entry(sdata, &local->interfaces, list) { |
dingtianhong | 496d7e8 | 2013-12-26 19:40:56 +0800 | [diff] [blame] | 1668 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1669 | used = true; |
| 1670 | break; |
| 1671 | } |
| 1672 | } |
| 1673 | |
| 1674 | if (!used) { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1675 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1676 | break; |
| 1677 | } |
| 1678 | addr = (start & ~mask) | (val & mask); |
| 1679 | } while (addr != start); |
| 1680 | |
| 1681 | break; |
| 1682 | } |
| 1683 | |
Johannes Berg | 6d71117 | 2012-06-19 17:19:44 +0200 | [diff] [blame] | 1684 | out_unlock: |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1685 | mutex_unlock(&local->iflist_mtx); |
| 1686 | } |
| 1687 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1688 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
Tom Gundersen | 6bab2e19 | 2015-03-18 11:13:39 +0100 | [diff] [blame] | 1689 | unsigned char name_assign_type, |
Johannes Berg | 84efbb8 | 2012-06-16 00:00:26 +0200 | [diff] [blame] | 1690 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 1691 | struct vif_params *params) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1692 | { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1693 | struct net_device *ndev = NULL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1694 | struct ieee80211_sub_if_data *sdata = NULL; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1695 | struct txq_info *txqi; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1696 | int ret, i; |
Johannes Berg | ded81f6 | 2012-03-28 11:04:26 +0200 | [diff] [blame] | 1697 | int txqs = 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1698 | |
| 1699 | ASSERT_RTNL(); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1700 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1701 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
| 1702 | struct wireless_dev *wdev; |
Johannes Berg | ded81f6 | 2012-03-28 11:04:26 +0200 | [diff] [blame] | 1703 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1704 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, |
| 1705 | GFP_KERNEL); |
| 1706 | if (!sdata) |
| 1707 | return -ENOMEM; |
| 1708 | wdev = &sdata->wdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1709 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1710 | sdata->dev = NULL; |
| 1711 | strlcpy(sdata->name, name, IFNAMSIZ); |
| 1712 | ieee80211_assign_perm_addr(local, wdev->address, type); |
| 1713 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); |
| 1714 | } else { |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1715 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
| 1716 | sizeof(void *)); |
| 1717 | int txq_size = 0; |
| 1718 | |
| 1719 | if (local->ops->wake_tx_queue) |
| 1720 | txq_size += sizeof(struct txq_info) + |
| 1721 | local->hw.txq_data_size; |
| 1722 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1723 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
| 1724 | txqs = IEEE80211_NUM_ACS; |
Johannes Berg | f3994ec | 2008-05-12 20:51:44 -0700 | [diff] [blame] | 1725 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1726 | ndev = alloc_netdev_mqs(size + txq_size, |
Tom Gundersen | 6bab2e19 | 2015-03-18 11:13:39 +0100 | [diff] [blame] | 1727 | name, name_assign_type, |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 1728 | ieee80211_if_setup, txqs, 1); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1729 | if (!ndev) |
| 1730 | return -ENOMEM; |
| 1731 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
Thadeu Lima de Souza Cascardo | 59e7e70 | 2011-06-02 17:28:37 -0300 | [diff] [blame] | 1732 | |
Johannes Berg | 5a49051 | 2015-04-22 17:10:38 +0200 | [diff] [blame] | 1733 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
| 1734 | if (!ndev->tstats) { |
| 1735 | free_netdev(ndev); |
| 1736 | return -ENOMEM; |
| 1737 | } |
| 1738 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1739 | ndev->needed_headroom = local->tx_headroom + |
| 1740 | 4*6 /* four MAC addresses */ |
| 1741 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ |
| 1742 | + 6 /* mesh */ |
| 1743 | + 8 /* rfc1042/bridge tunnel */ |
| 1744 | - ETH_HLEN /* ethernet hard_header_len */ |
| 1745 | + IEEE80211_ENCRYPT_HEADROOM; |
| 1746 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1747 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1748 | ret = dev_alloc_name(ndev, ndev->name); |
| 1749 | if (ret < 0) { |
| 1750 | free_netdev(ndev); |
| 1751 | return ret; |
| 1752 | } |
| 1753 | |
| 1754 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); |
Ben Greear | b5dfae0 | 2014-10-22 12:23:06 -0700 | [diff] [blame] | 1755 | if (params && is_valid_ether_addr(params->macaddr)) |
| 1756 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); |
| 1757 | else |
| 1758 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1759 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
| 1760 | |
| 1761 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ |
| 1762 | sdata = netdev_priv(ndev); |
| 1763 | ndev->ieee80211_ptr = &sdata->wdev; |
| 1764 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
| 1765 | memcpy(sdata->name, ndev->name, IFNAMSIZ); |
| 1766 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1767 | if (txq_size) { |
| 1768 | txqi = netdev_priv(ndev) + size; |
| 1769 | ieee80211_init_tx_queue(sdata, NULL, txqi, 0); |
| 1770 | } |
| 1771 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1772 | sdata->dev = ndev; |
| 1773 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1774 | |
| 1775 | /* initialise type-independent data */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1776 | sdata->wdev.wiphy = local->hw.wiphy; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1777 | sdata->local = local; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1778 | |
| 1779 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
| 1780 | skb_queue_head_init(&sdata->fragments[i].skb_list); |
| 1781 | |
| 1782 | INIT_LIST_HEAD(&sdata->key_list); |
| 1783 | |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 1784 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
| 1785 | ieee80211_dfs_cac_timer_work); |
Johannes Berg | 8d1f7ec | 2013-02-23 00:59:03 +0100 | [diff] [blame] | 1786 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
| 1787 | ieee80211_delayed_tailroom_dec); |
Johannes Berg | 97f97b1 | 2012-12-13 22:54:58 +0100 | [diff] [blame] | 1788 | |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 1789 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
| 1790 | struct ieee80211_supported_band *sband; |
| 1791 | sband = local->hw.wiphy->bands[i]; |
| 1792 | sdata->rc_rateidx_mask[i] = |
| 1793 | sband ? (1 << sband->n_bitrates) - 1 : 0; |
Lorenzo Bianconi | b119ad6 | 2015-08-06 23:47:33 +0200 | [diff] [blame] | 1794 | if (sband) { |
| 1795 | __le16 cap; |
| 1796 | u16 *vht_rate_mask; |
| 1797 | |
Simon Wunderlich | 1946841 | 2012-01-28 17:25:33 +0100 | [diff] [blame] | 1798 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
| 1799 | sband->ht_cap.mcs.rx_mask, |
| 1800 | sizeof(sdata->rc_rateidx_mcs_mask[i])); |
Lorenzo Bianconi | b119ad6 | 2015-08-06 23:47:33 +0200 | [diff] [blame] | 1801 | |
| 1802 | cap = sband->vht_cap.vht_mcs.rx_mcs_map; |
| 1803 | vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; |
| 1804 | ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); |
| 1805 | } else { |
Simon Wunderlich | 1946841 | 2012-01-28 17:25:33 +0100 | [diff] [blame] | 1806 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
| 1807 | sizeof(sdata->rc_rateidx_mcs_mask[i])); |
Lorenzo Bianconi | b119ad6 | 2015-08-06 23:47:33 +0200 | [diff] [blame] | 1808 | memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, |
| 1809 | sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); |
| 1810 | } |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 1811 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1812 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 1813 | ieee80211_set_default_queues(sdata); |
| 1814 | |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 1815 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
| 1816 | sdata->user_power_level = local->user_power_level; |
| 1817 | |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 1818 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
| 1819 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1820 | /* setup type-dependent data */ |
| 1821 | ieee80211_setup_sdata(sdata, type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1822 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1823 | if (ndev) { |
| 1824 | if (params) { |
| 1825 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; |
| 1826 | if (type == NL80211_IFTYPE_STATION) |
| 1827 | sdata->u.mgd.use_4addr = params->use_4addr; |
| 1828 | } |
| 1829 | |
| 1830 | ndev->features |= local->hw.netdev_features; |
| 1831 | |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 1832 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
| 1833 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1834 | ret = register_netdevice(ndev); |
| 1835 | if (ret) { |
| 1836 | free_netdev(ndev); |
| 1837 | return ret; |
| 1838 | } |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 1839 | } |
| 1840 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1841 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1842 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1843 | mutex_unlock(&local->iflist_mtx); |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1844 | |
Johannes Berg | 84efbb8 | 2012-06-16 00:00:26 +0200 | [diff] [blame] | 1845 | if (new_wdev) |
| 1846 | *new_wdev = &sdata->wdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1847 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1848 | return 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1849 | } |
| 1850 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1851 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1852 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1853 | ASSERT_RTNL(); |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1854 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1855 | mutex_lock(&sdata->local->iflist_mtx); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1856 | list_del_rcu(&sdata->list); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1857 | mutex_unlock(&sdata->local->iflist_mtx); |
| 1858 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1859 | synchronize_rcu(); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1860 | |
| 1861 | if (sdata->dev) { |
| 1862 | unregister_netdevice(sdata->dev); |
| 1863 | } else { |
| 1864 | cfg80211_unregister_wdev(&sdata->wdev); |
| 1865 | kfree(sdata); |
| 1866 | } |
| 1867 | } |
| 1868 | |
| 1869 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) |
| 1870 | { |
| 1871 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) |
| 1872 | return; |
| 1873 | ieee80211_do_stop(sdata, true); |
| 1874 | ieee80211_teardown_sdata(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1875 | } |
| 1876 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1877 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1878 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1879 | struct ieee80211_sub_if_data *sdata, *tmp; |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 1880 | LIST_HEAD(unreg_list); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1881 | LIST_HEAD(wdev_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1882 | |
| 1883 | ASSERT_RTNL(); |
| 1884 | |
Johannes Berg | d8d9008 | 2015-07-08 15:41:50 +0300 | [diff] [blame] | 1885 | /* Before destroying the interfaces, make sure they're all stopped so |
| 1886 | * that the hardware is stopped. Otherwise, the driver might still be |
| 1887 | * iterating the interfaces during the shutdown, e.g. from a worker |
| 1888 | * or from RX processing or similar, and if it does so (using atomic |
| 1889 | * iteration) while we're manipulating the list, the iteration will |
| 1890 | * crash. |
| 1891 | * |
| 1892 | * After this, the hardware should be stopped and the driver should |
| 1893 | * have stopped all of its activities, so that we can do RCU-unaware |
| 1894 | * manipulations of the interface list below. |
Johannes Berg | c8aa22d | 2013-05-24 01:06:09 +0200 | [diff] [blame] | 1895 | */ |
Johannes Berg | d8d9008 | 2015-07-08 15:41:50 +0300 | [diff] [blame] | 1896 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
| 1897 | |
| 1898 | WARN(local->open_count, "%s: open count remains %d\n", |
| 1899 | wiphy_name(local->hw.wiphy), local->open_count); |
Johannes Berg | c8aa22d | 2013-05-24 01:06:09 +0200 | [diff] [blame] | 1900 | |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 1901 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1902 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
| 1903 | list_del(&sdata->list); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1904 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1905 | if (sdata->dev) |
| 1906 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
| 1907 | else |
| 1908 | list_add(&sdata->list, &wdev_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1909 | } |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 1910 | mutex_unlock(&local->iflist_mtx); |
| 1911 | unregister_netdevice_many(&unreg_list); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1912 | |
| 1913 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { |
| 1914 | list_del(&sdata->list); |
| 1915 | cfg80211_unregister_wdev(&sdata->wdev); |
| 1916 | kfree(sdata); |
| 1917 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1918 | } |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 1919 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1920 | static int netdev_notify(struct notifier_block *nb, |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 1921 | unsigned long state, void *ptr) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1922 | { |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 1923 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1924 | struct ieee80211_sub_if_data *sdata; |
| 1925 | |
| 1926 | if (state != NETDEV_CHANGENAME) |
Zhao, Gang | 8bd811a | 2014-04-21 12:53:05 +0800 | [diff] [blame] | 1927 | return NOTIFY_DONE; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1928 | |
| 1929 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) |
Zhao, Gang | 8bd811a | 2014-04-21 12:53:05 +0800 | [diff] [blame] | 1930 | return NOTIFY_DONE; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1931 | |
| 1932 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) |
Zhao, Gang | 8bd811a | 2014-04-21 12:53:05 +0800 | [diff] [blame] | 1933 | return NOTIFY_DONE; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1934 | |
| 1935 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 2f5265e | 2010-02-12 10:45:05 +0100 | [diff] [blame] | 1936 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1937 | ieee80211_debugfs_rename_netdev(sdata); |
Zhao, Gang | 8bd811a | 2014-04-21 12:53:05 +0800 | [diff] [blame] | 1938 | |
| 1939 | return NOTIFY_OK; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1940 | } |
| 1941 | |
| 1942 | static struct notifier_block mac80211_netdev_notifier = { |
| 1943 | .notifier_call = netdev_notify, |
| 1944 | }; |
| 1945 | |
| 1946 | int ieee80211_iface_init(void) |
| 1947 | { |
| 1948 | return register_netdevice_notifier(&mac80211_netdev_notifier); |
| 1949 | } |
| 1950 | |
| 1951 | void ieee80211_iface_exit(void) |
| 1952 | { |
| 1953 | unregister_netdevice_notifier(&mac80211_netdev_notifier); |
| 1954 | } |