Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 2 | * Interface handling (except master interface) |
| 3 | * |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 5 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 6 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 14 | #include <linux/kernel.h> |
| 15 | #include <linux/if_arp.h> |
| 16 | #include <linux/netdevice.h> |
| 17 | #include <linux/rtnetlink.h> |
| 18 | #include <net/mac80211.h> |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 19 | #include <net/ieee80211_radiotap.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 20 | #include "ieee80211_i.h" |
| 21 | #include "sta_info.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 22 | #include "debugfs_netdev.h" |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 23 | #include "mesh.h" |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 24 | #include "led.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 25 | #include "driver-ops.h" |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 26 | #include "wme.h" |
Bill Jordan | 1be7fe8 | 2010-10-01 11:20:41 -0400 | [diff] [blame] | 27 | #include "rate.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 28 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 29 | /** |
| 30 | * DOC: Interface list locking |
| 31 | * |
| 32 | * The interface list in each struct ieee80211_local is protected |
| 33 | * three-fold: |
| 34 | * |
| 35 | * (1) modifications may only be done under the RTNL |
| 36 | * (2) modifications and readers are protected against each other by |
| 37 | * the iflist_mtx. |
| 38 | * (3) modifications are done in an RCU manner so atomic readers |
| 39 | * can traverse the list in RCU-safe blocks. |
| 40 | * |
| 41 | * As a consequence, reads (traversals) of the list can be protected |
| 42 | * by either the RTNL, the iflist_mtx or RCU. |
| 43 | */ |
| 44 | |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 45 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
| 46 | { |
| 47 | struct ieee80211_chanctx_conf *chanctx_conf; |
| 48 | int power; |
| 49 | |
| 50 | rcu_read_lock(); |
| 51 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); |
| 52 | if (!chanctx_conf) { |
| 53 | rcu_read_unlock(); |
| 54 | return false; |
| 55 | } |
| 56 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 57 | power = chanctx_conf->def.chan->max_power; |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 58 | rcu_read_unlock(); |
| 59 | |
| 60 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) |
| 61 | power = min(power, sdata->user_power_level); |
| 62 | |
| 63 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) |
| 64 | power = min(power, sdata->ap_power_level); |
| 65 | |
| 66 | if (power != sdata->vif.bss_conf.txpower) { |
| 67 | sdata->vif.bss_conf.txpower = power; |
| 68 | ieee80211_hw_config(sdata->local, 0); |
| 69 | return true; |
| 70 | } |
| 71 | |
| 72 | return false; |
| 73 | } |
| 74 | |
| 75 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
| 76 | { |
| 77 | if (__ieee80211_recalc_txpower(sdata)) |
| 78 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); |
| 79 | } |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 80 | |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 81 | static u32 ieee80211_idle_off(struct ieee80211_local *local) |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 82 | { |
| 83 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) |
| 84 | return 0; |
| 85 | |
| 86 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; |
| 87 | return IEEE80211_CONF_CHANGE_IDLE; |
| 88 | } |
| 89 | |
| 90 | static u32 ieee80211_idle_on(struct ieee80211_local *local) |
| 91 | { |
| 92 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) |
| 93 | return 0; |
| 94 | |
| 95 | drv_flush(local, false); |
| 96 | |
| 97 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; |
| 98 | return IEEE80211_CONF_CHANGE_IDLE; |
| 99 | } |
| 100 | |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 101 | void ieee80211_recalc_idle(struct ieee80211_local *local) |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 102 | { |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 103 | bool working = false, scanning, active; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 104 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
| 105 | struct ieee80211_roc_work *roc; |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 106 | u32 change; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 107 | |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 108 | lockdep_assert_held(&local->mtx); |
| 109 | |
Felix Fietkau | b759f4d | 2013-02-23 18:40:57 +0100 | [diff] [blame] | 110 | active = !list_empty(&local->chanctx_list) || local->monitors; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 111 | |
| 112 | if (!local->ops->remain_on_channel) { |
| 113 | list_for_each_entry(roc, &local->roc_list, list) { |
| 114 | working = true; |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 115 | break; |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 116 | } |
| 117 | } |
| 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) |
| 135 | change = ieee80211_idle_off(local); |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 136 | else |
Johannes Berg | fd0f979 | 2013-02-07 00:14:51 +0100 | [diff] [blame] | 137 | change = ieee80211_idle_on(local); |
| 138 | if (change) |
| 139 | ieee80211_hw_config(local, change); |
Johannes Berg | cc45ae54 | 2012-06-21 22:30:52 +0200 | [diff] [blame] | 140 | } |
| 141 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 142 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
| 143 | { |
Chaitanya | 09b1426 | 2012-12-21 17:15:17 +0530 | [diff] [blame] | 144 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 145 | return -EINVAL; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 146 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 147 | dev->mtu = new_mtu; |
| 148 | return 0; |
| 149 | } |
| 150 | |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 151 | static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr) |
| 152 | { |
| 153 | struct ieee80211_sub_if_data *sdata; |
| 154 | u64 new, mask, tmp; |
| 155 | u8 *m; |
| 156 | int ret = 0; |
| 157 | |
| 158 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) |
| 159 | return 0; |
| 160 | |
| 161 | m = addr; |
| 162 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 163 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 164 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 165 | |
| 166 | m = local->hw.wiphy->addr_mask; |
| 167 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 168 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 169 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 170 | |
| 171 | |
| 172 | mutex_lock(&local->iflist_mtx); |
| 173 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 174 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) |
| 175 | continue; |
| 176 | |
| 177 | m = sdata->vif.addr; |
| 178 | tmp = ((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 | |
| 182 | if ((new & ~mask) != (tmp & ~mask)) { |
| 183 | ret = -EINVAL; |
| 184 | break; |
| 185 | } |
| 186 | } |
| 187 | mutex_unlock(&local->iflist_mtx); |
| 188 | |
| 189 | return ret; |
| 190 | } |
| 191 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 192 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
| 193 | { |
| 194 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 195 | struct sockaddr *sa = addr; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 196 | int ret; |
| 197 | |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 198 | if (ieee80211_sdata_running(sdata)) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 199 | return -EBUSY; |
| 200 | |
Helmut Schaa | 478622e | 2012-11-27 18:23:06 +0100 | [diff] [blame] | 201 | ret = ieee80211_verify_mac(sdata->local, sa->sa_data); |
| 202 | if (ret) |
| 203 | return ret; |
| 204 | |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 205 | ret = eth_mac_addr(dev, sa); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 206 | |
| 207 | if (ret == 0) |
Kalle Valo | fc5f757 | 2009-12-30 15:54:03 +0200 | [diff] [blame] | 208 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 209 | |
| 210 | return ret; |
| 211 | } |
| 212 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 213 | static inline int identical_mac_addr_allowed(int type1, int type2) |
| 214 | { |
| 215 | return type1 == NL80211_IFTYPE_MONITOR || |
| 216 | type2 == NL80211_IFTYPE_MONITOR || |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 217 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
| 218 | type2 == NL80211_IFTYPE_P2P_DEVICE || |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 219 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
| 220 | (type1 == NL80211_IFTYPE_WDS && |
| 221 | (type2 == NL80211_IFTYPE_WDS || |
| 222 | type2 == NL80211_IFTYPE_AP)) || |
| 223 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || |
| 224 | (type1 == NL80211_IFTYPE_AP_VLAN && |
| 225 | (type2 == NL80211_IFTYPE_AP || |
| 226 | type2 == NL80211_IFTYPE_AP_VLAN)); |
| 227 | } |
| 228 | |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 229 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
| 230 | enum nl80211_iftype iftype) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 231 | { |
Johannes Berg | b4a4bf5 | 2008-09-26 13:34:54 +0200 | [diff] [blame] | 232 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 233 | struct ieee80211_sub_if_data *nsdata; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 234 | |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 235 | ASSERT_RTNL(); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 236 | |
| 237 | /* we hold the RTNL here so can safely walk the list */ |
| 238 | list_for_each_entry(nsdata, &local->interfaces, list) { |
Johannes Berg | 371a255 | 2012-06-19 15:54:05 +0200 | [diff] [blame] | 239 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 240 | /* |
| 241 | * Allow only a single IBSS interface to be up at any |
| 242 | * time. This is restricted because beacon distribution |
| 243 | * cannot work properly if both are in the same IBSS. |
| 244 | * |
| 245 | * To remove this restriction we'd have to disallow them |
| 246 | * from setting the same SSID on different IBSS interfaces |
| 247 | * belonging to the same hardware. Then, however, we're |
| 248 | * faced with having to adopt two different TSF timers... |
| 249 | */ |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 250 | if (iftype == NL80211_IFTYPE_ADHOC && |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 251 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
| 252 | return -EBUSY; |
| 253 | |
| 254 | /* |
| 255 | * The remaining checks are only performed for interfaces |
| 256 | * with the same MAC address. |
| 257 | */ |
Johannes Berg | 371a255 | 2012-06-19 15:54:05 +0200 | [diff] [blame] | 258 | if (!ether_addr_equal(sdata->vif.addr, |
| 259 | nsdata->vif.addr)) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 260 | continue; |
| 261 | |
| 262 | /* |
| 263 | * check whether it may have the same address |
| 264 | */ |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 265 | if (!identical_mac_addr_allowed(iftype, |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 266 | nsdata->vif.type)) |
| 267 | return -ENOTUNIQ; |
| 268 | |
| 269 | /* |
| 270 | * can only add VLANs to enabled APs |
| 271 | */ |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 272 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 273 | nsdata->vif.type == NL80211_IFTYPE_AP) |
| 274 | sdata->bss = &nsdata->u.ap; |
| 275 | } |
| 276 | } |
| 277 | |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 278 | return 0; |
| 279 | } |
| 280 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 281 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
| 282 | { |
| 283 | int n_queues = sdata->local->hw.queues; |
| 284 | int i; |
| 285 | |
Ilan Peer | 0ef24e5 | 2012-08-21 12:43:35 +0300 | [diff] [blame] | 286 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { |
| 287 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
| 288 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == |
| 289 | IEEE80211_INVAL_HW_QUEUE)) |
| 290 | return -EINVAL; |
| 291 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= |
| 292 | n_queues)) |
| 293 | return -EINVAL; |
| 294 | } |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 295 | } |
| 296 | |
Bob Copeland | 8ffb5c0 | 2013-02-15 10:18:34 -0500 | [diff] [blame] | 297 | if ((sdata->vif.type != NL80211_IFTYPE_AP && |
| 298 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) || |
Luciano Coelho | bb3e10f | 2012-04-12 16:09:49 +0300 | [diff] [blame] | 299 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 300 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) |
| 305 | return -EINVAL; |
| 306 | |
| 307 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) |
| 308 | return -EINVAL; |
| 309 | |
| 310 | return 0; |
| 311 | } |
| 312 | |
Christian Lamparter | 85416a4 | 2010-10-02 13:17:07 +0200 | [diff] [blame] | 313 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
| 314 | const int offset) |
| 315 | { |
| 316 | struct ieee80211_local *local = sdata->local; |
| 317 | u32 flags = sdata->u.mntr_flags; |
| 318 | |
| 319 | #define ADJUST(_f, _s) do { \ |
| 320 | if (flags & MONITOR_FLAG_##_f) \ |
| 321 | local->fif_##_s += offset; \ |
| 322 | } while (0) |
| 323 | |
| 324 | ADJUST(FCSFAIL, fcsfail); |
| 325 | ADJUST(PLCPFAIL, plcpfail); |
| 326 | ADJUST(CONTROL, control); |
| 327 | ADJUST(CONTROL, pspoll); |
| 328 | ADJUST(OTHER_BSS, other_bss); |
| 329 | |
| 330 | #undef ADJUST |
| 331 | } |
| 332 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 333 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
| 334 | { |
| 335 | struct ieee80211_local *local = sdata->local; |
| 336 | int i; |
| 337 | |
| 338 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
| 339 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) |
| 340 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; |
Johannes Berg | a9d3c05 | 2012-05-07 17:45:29 +0200 | [diff] [blame] | 341 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 342 | sdata->vif.hw_queue[i] = i; |
Johannes Berg | a9d3c05 | 2012-05-07 17:45:29 +0200 | [diff] [blame] | 343 | else |
| 344 | sdata->vif.hw_queue[i] = 0; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 345 | } |
| 346 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
| 347 | } |
| 348 | |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 349 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 350 | { |
| 351 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 352 | int ret; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 353 | |
| 354 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) |
| 355 | return 0; |
| 356 | |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 357 | ASSERT_RTNL(); |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 358 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 359 | if (local->monitor_sdata) |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 360 | return 0; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 361 | |
| 362 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 363 | if (!sdata) |
| 364 | return -ENOMEM; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 365 | |
| 366 | /* set up data */ |
| 367 | sdata->local = local; |
| 368 | sdata->vif.type = NL80211_IFTYPE_MONITOR; |
| 369 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", |
| 370 | wiphy_name(local->hw.wiphy)); |
| 371 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 372 | ieee80211_set_default_queues(sdata); |
| 373 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 374 | ret = drv_add_interface(local, sdata); |
| 375 | if (WARN_ON(ret)) { |
| 376 | /* ok .. stupid driver, it asked for this! */ |
| 377 | kfree(sdata); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 378 | return ret; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 379 | } |
| 380 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 381 | ret = ieee80211_check_queues(sdata); |
| 382 | if (ret) { |
| 383 | kfree(sdata); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 384 | return ret; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 385 | } |
| 386 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 387 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 388 | IEEE80211_CHANCTX_EXCLUSIVE); |
| 389 | if (ret) { |
| 390 | drv_remove_interface(local, sdata); |
| 391 | kfree(sdata); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 392 | return ret; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 393 | } |
| 394 | |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 395 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 396 | rcu_assign_pointer(local->monitor_sdata, sdata); |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 397 | mutex_unlock(&local->iflist_mtx); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 398 | |
| 399 | return 0; |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 400 | } |
| 401 | |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 402 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 403 | { |
| 404 | struct ieee80211_sub_if_data *sdata; |
| 405 | |
| 406 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) |
| 407 | return; |
| 408 | |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 409 | ASSERT_RTNL(); |
| 410 | |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 411 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 412 | |
Johannes Berg | 685fb72 | 2012-07-11 16:38:09 +0200 | [diff] [blame] | 413 | sdata = rcu_dereference_protected(local->monitor_sdata, |
| 414 | lockdep_is_held(&local->iflist_mtx)); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 415 | if (!sdata) { |
| 416 | mutex_unlock(&local->iflist_mtx); |
| 417 | return; |
| 418 | } |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 419 | |
| 420 | rcu_assign_pointer(local->monitor_sdata, NULL); |
Johannes Berg | 8b30578 | 2013-03-20 22:25:17 +0100 | [diff] [blame^] | 421 | mutex_unlock(&local->iflist_mtx); |
| 422 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 423 | synchronize_net(); |
| 424 | |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 425 | ieee80211_vif_release_channel(sdata); |
| 426 | |
Johannes Berg | 4b6f1dd | 2012-04-03 14:35:57 +0200 | [diff] [blame] | 427 | drv_remove_interface(local, sdata); |
| 428 | |
| 429 | kfree(sdata); |
| 430 | } |
| 431 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 432 | /* |
| 433 | * NOTE: Be very careful when changing this function, it must NOT return |
| 434 | * an error on interface type changes that have been pre-checked, so most |
| 435 | * checks should be in ieee80211_check_concurrent_iface. |
| 436 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 437 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 438 | { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 439 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
| 440 | struct net_device *dev = wdev->netdev; |
Johannes Berg | 87490f6 | 2010-08-27 12:35:57 +0200 | [diff] [blame] | 441 | struct ieee80211_local *local = sdata->local; |
| 442 | struct sta_info *sta; |
| 443 | u32 changed = 0; |
| 444 | int res; |
| 445 | u32 hw_reconf_flags = 0; |
| 446 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 447 | switch (sdata->vif.type) { |
| 448 | case NL80211_IFTYPE_WDS: |
| 449 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
| 450 | return -ENOLINK; |
| 451 | break; |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 452 | case NL80211_IFTYPE_AP_VLAN: { |
| 453 | struct ieee80211_sub_if_data *master; |
| 454 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 455 | if (!sdata->bss) |
| 456 | return -ENOLINK; |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 457 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 458 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 459 | |
| 460 | master = container_of(sdata->bss, |
| 461 | struct ieee80211_sub_if_data, u.ap); |
| 462 | sdata->control_port_protocol = |
| 463 | master->control_port_protocol; |
| 464 | sdata->control_port_no_encrypt = |
| 465 | master->control_port_no_encrypt; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 466 | break; |
Johannes Berg | 665c93a | 2011-11-04 11:18:11 +0100 | [diff] [blame] | 467 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 468 | case NL80211_IFTYPE_AP: |
| 469 | sdata->bss = &sdata->u.ap; |
| 470 | break; |
| 471 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 472 | case NL80211_IFTYPE_STATION: |
| 473 | case NL80211_IFTYPE_MONITOR: |
| 474 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 475 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 476 | /* no special treatment */ |
| 477 | break; |
| 478 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 479 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 480 | case NL80211_IFTYPE_P2P_CLIENT: |
| 481 | case NL80211_IFTYPE_P2P_GO: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 482 | /* cannot happen */ |
| 483 | WARN_ON(1); |
| 484 | break; |
| 485 | } |
| 486 | |
| 487 | if (local->open_count == 0) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 488 | res = drv_start(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 489 | if (res) |
| 490 | goto err_del_bss; |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 491 | if (local->ops->napi_poll) |
| 492 | napi_enable(&local->napi); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 493 | /* we're brought up, everything changes */ |
| 494 | hw_reconf_flags = ~0; |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 495 | ieee80211_led_radio(local, true); |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 496 | ieee80211_mod_tpt_led_trig(local, |
| 497 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | /* |
Johannes Berg | bf533e0 | 2010-08-27 12:35:56 +0200 | [diff] [blame] | 501 | * Copy the hopefully now-present MAC address to |
| 502 | * this interface, if it has the special null one. |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 503 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 504 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
Johannes Berg | bf533e0 | 2010-08-27 12:35:56 +0200 | [diff] [blame] | 505 | memcpy(dev->dev_addr, |
| 506 | local->hw.wiphy->perm_addr, |
| 507 | ETH_ALEN); |
| 508 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 509 | |
Johannes Berg | bf533e0 | 2010-08-27 12:35:56 +0200 | [diff] [blame] | 510 | if (!is_valid_ether_addr(dev->dev_addr)) { |
Johannes Berg | 4d6c36f | 2012-04-03 14:45:54 +0200 | [diff] [blame] | 511 | res = -EADDRNOTAVAIL; |
| 512 | goto err_stop; |
John W. Linville | 0adc23f | 2009-10-06 16:27:18 -0400 | [diff] [blame] | 513 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 514 | } |
| 515 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 516 | switch (sdata->vif.type) { |
| 517 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 518 | /* no need to tell driver, but set carrier and chanctx */ |
| 519 | if (rtnl_dereference(sdata->bss->beacon)) { |
| 520 | ieee80211_vif_vlan_copy_chanctx(sdata); |
Johannes Berg | 3edaf3e | 2012-04-03 10:24:00 +0200 | [diff] [blame] | 521 | netif_carrier_on(dev); |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 522 | } else { |
Johannes Berg | 3edaf3e | 2012-04-03 10:24:00 +0200 | [diff] [blame] | 523 | netif_carrier_off(dev); |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 524 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 525 | break; |
| 526 | case NL80211_IFTYPE_MONITOR: |
| 527 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 528 | local->cooked_mntrs++; |
| 529 | break; |
| 530 | } |
| 531 | |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 532 | if (local->monitors == 0 && local->open_count == 0) { |
| 533 | res = ieee80211_add_virtual_monitor(local); |
| 534 | if (res) |
| 535 | goto err_stop; |
| 536 | } |
| 537 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 538 | /* must be before the call to ieee80211_configure_filter */ |
| 539 | local->monitors++; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 540 | if (local->monitors == 1) { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 541 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
| 542 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 543 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 544 | |
Christian Lamparter | 85416a4 | 2010-10-02 13:17:07 +0200 | [diff] [blame] | 545 | ieee80211_adjust_monitor_flags(sdata, 1); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 546 | ieee80211_configure_filter(local); |
Felix Fietkau | 801d929 | 2013-03-02 19:05:47 +0100 | [diff] [blame] | 547 | mutex_lock(&local->mtx); |
| 548 | ieee80211_recalc_idle(local); |
| 549 | mutex_unlock(&local->mtx); |
David Gnedt | 53e9b1d | 2010-07-19 20:44:02 +0200 | [diff] [blame] | 550 | |
| 551 | netif_carrier_on(dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 552 | break; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 553 | default: |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 554 | if (coming_up) { |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 555 | ieee80211_del_virtual_monitor(local); |
| 556 | |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 557 | res = drv_add_interface(local, sdata); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 558 | if (res) |
| 559 | goto err_stop; |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 560 | res = ieee80211_check_queues(sdata); |
| 561 | if (res) |
| 562 | goto err_del_interface; |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 563 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 564 | |
Alexander Bondar | b207cdb | 2012-12-22 10:43:33 +0200 | [diff] [blame] | 565 | drv_add_interface_debugfs(local, sdata); |
| 566 | |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 567 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 568 | local->fif_pspoll++; |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 569 | local->fif_probe_req++; |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 570 | |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 571 | ieee80211_configure_filter(local); |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 572 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
| 573 | local->fif_probe_req++; |
Andrey Yurovsky | a3c9aa5 | 2008-10-31 14:50:12 -0700 | [diff] [blame] | 574 | } |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 575 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 576 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
| 577 | changed |= ieee80211_reset_erp_info(sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 578 | ieee80211_bss_info_change_notify(sdata, changed); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 579 | |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 580 | switch (sdata->vif.type) { |
| 581 | case NL80211_IFTYPE_STATION: |
| 582 | case NL80211_IFTYPE_ADHOC: |
| 583 | case NL80211_IFTYPE_AP: |
| 584 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 585 | netif_carrier_off(dev); |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 586 | break; |
Johannes Berg | 1411af1 | 2012-07-30 19:48:09 +0200 | [diff] [blame] | 587 | case NL80211_IFTYPE_WDS: |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 588 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | 1411af1 | 2012-07-30 19:48:09 +0200 | [diff] [blame] | 589 | break; |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 590 | default: |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 591 | netif_carrier_on(dev); |
Johannes Berg | c405c62 | 2012-07-30 19:44:12 +0200 | [diff] [blame] | 592 | } |
Eliad Peller | 5903459 | 2011-10-16 10:57:31 +0200 | [diff] [blame] | 593 | |
| 594 | /* |
| 595 | * set default queue parameters so drivers don't |
| 596 | * need to initialise the hardware if the hardware |
| 597 | * doesn't start up with sane defaults |
| 598 | */ |
Johannes Berg | 3abead5 | 2012-03-02 15:56:59 +0100 | [diff] [blame] | 599 | ieee80211_set_wmm_default(sdata, true); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 600 | } |
| 601 | |
Johannes Berg | 2d2080c | 2010-09-15 15:13:13 +0200 | [diff] [blame] | 602 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
| 603 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 604 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
| 605 | /* Create STA entry for the WDS peer */ |
| 606 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, |
| 607 | GFP_KERNEL); |
| 608 | if (!sta) { |
| 609 | res = -ENOMEM; |
| 610 | goto err_del_interface; |
| 611 | } |
| 612 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 613 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
| 614 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); |
| 615 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 616 | |
| 617 | res = sta_info_insert(sta); |
| 618 | if (res) { |
| 619 | /* STA has been freed */ |
| 620 | goto err_del_interface; |
| 621 | } |
Bill Jordan | 1be7fe8 | 2010-10-01 11:20:41 -0400 | [diff] [blame] | 622 | |
| 623 | rate_control_rate_init(sta); |
Johannes Berg | 1411af1 | 2012-07-30 19:48:09 +0200 | [diff] [blame] | 624 | netif_carrier_on(dev); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 625 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
| 626 | rcu_assign_pointer(local->p2p_sdata, sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 627 | } |
| 628 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 629 | /* |
| 630 | * set_multicast_list will be invoked by the networking core |
| 631 | * which will check whether any increments here were done in |
| 632 | * error and sync them down to the hardware as filter flags. |
| 633 | */ |
| 634 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 635 | atomic_inc(&local->iff_allmultis); |
| 636 | |
| 637 | if (sdata->flags & IEEE80211_SDATA_PROMISC) |
| 638 | atomic_inc(&local->iff_promiscs); |
| 639 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 640 | if (coming_up) |
| 641 | local->open_count++; |
| 642 | |
Eliad Peller | 5903459 | 2011-10-16 10:57:31 +0200 | [diff] [blame] | 643 | if (hw_reconf_flags) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 644 | ieee80211_hw_config(local, hw_reconf_flags); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 645 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 646 | ieee80211_recalc_ps(local, -1); |
Johannes Berg | 965beda | 2009-04-16 13:17:24 +0200 | [diff] [blame] | 647 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 648 | if (dev) |
| 649 | netif_tx_start_all_queues(dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 650 | |
| 651 | return 0; |
| 652 | err_del_interface: |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 653 | drv_remove_interface(local, sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 654 | err_stop: |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 655 | if (!local->open_count) |
| 656 | drv_stop(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 657 | err_del_bss: |
| 658 | sdata->bss = NULL; |
| 659 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| 660 | list_del(&sdata->u.vlan.list); |
Johannes Berg | 4d6c36f | 2012-04-03 14:45:54 +0200 | [diff] [blame] | 661 | /* might already be clear but that doesn't matter */ |
Johannes Berg | 2d2080c | 2010-09-15 15:13:13 +0200 | [diff] [blame] | 662 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 663 | return res; |
| 664 | } |
| 665 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 666 | static int ieee80211_open(struct net_device *dev) |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 667 | { |
| 668 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 669 | int err; |
| 670 | |
| 671 | /* fail early if user set an invalid address */ |
Mohammed Shafi Shajakhan | 2fcf2824 | 2011-07-12 15:19:04 +0530 | [diff] [blame] | 672 | if (!is_valid_ether_addr(dev->dev_addr)) |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 673 | return -EADDRNOTAVAIL; |
| 674 | |
| 675 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); |
| 676 | if (err) |
| 677 | return err; |
| 678 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 679 | return ieee80211_do_open(&sdata->wdev, true); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, |
| 683 | bool going_down) |
| 684 | { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 685 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 686 | unsigned long flags; |
| 687 | struct sk_buff *skb, *tmp; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 688 | u32 hw_reconf_flags = 0; |
Johannes Berg | 09f4114 | 2012-12-13 23:26:57 +0100 | [diff] [blame] | 689 | int i, flushed; |
Michael Braun | 397a7a2 | 2013-02-13 16:49:15 +0100 | [diff] [blame] | 690 | struct ps_data *ps; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 691 | |
Rajkumar Manoharan | c29acf2 | 2011-05-14 09:43:28 +0530 | [diff] [blame] | 692 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
| 693 | |
Johannes Berg | e2fd5db | 2012-07-06 21:39:28 +0200 | [diff] [blame] | 694 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
Brian Cavagnolo | 352ffad | 2010-11-04 16:59:28 -0700 | [diff] [blame] | 695 | ieee80211_scan_cancel(local); |
| 696 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 697 | /* |
| 698 | * Stop TX on this interface first. |
| 699 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 700 | if (sdata->dev) |
| 701 | netif_tx_stop_all_queues(sdata->dev); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 702 | |
Johannes Berg | 2eb278e | 2012-06-05 14:28:42 +0200 | [diff] [blame] | 703 | ieee80211_roc_purge(sdata); |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 704 | |
Johannes Berg | 572078b | 2013-02-15 11:47:50 +0100 | [diff] [blame] | 705 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
| 706 | ieee80211_mgd_stop(sdata); |
| 707 | |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 708 | /* |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 709 | * Remove all stations associated with this interface. |
| 710 | * |
| 711 | * This must be done before calling ops->remove_interface() |
| 712 | * because otherwise we can later invoke ops->sta_notify() |
| 713 | * whenever the STAs are removed, and that invalidates driver |
| 714 | * assumptions about always getting a vif pointer that is valid |
| 715 | * (because if we remove a STA after ops->remove_interface() |
| 716 | * the driver will have removed the vif info already!) |
| 717 | * |
Johannes Berg | 09f4114 | 2012-12-13 23:26:57 +0100 | [diff] [blame] | 718 | * This is relevant only in WDS mode, in all other modes we've |
| 719 | * already removed all stations when disconnecting or similar, |
| 720 | * so warn otherwise. |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 721 | * |
| 722 | * We call sta_info_flush_cleanup() later, to combine RCU waits. |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 723 | */ |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 724 | flushed = sta_info_flush_defer(sdata); |
Johannes Berg | 09f4114 | 2012-12-13 23:26:57 +0100 | [diff] [blame] | 725 | WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || |
| 726 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 727 | |
| 728 | /* |
| 729 | * Don't count this interface for promisc/allmulti while it |
| 730 | * is down. dev_mc_unsync() will invoke set_multicast_list |
| 731 | * on the master interface which will sync these down to the |
| 732 | * hardware as filter flags. |
| 733 | */ |
| 734 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 735 | atomic_dec(&local->iff_allmultis); |
| 736 | |
| 737 | if (sdata->flags & IEEE80211_SDATA_PROMISC) |
| 738 | atomic_dec(&local->iff_promiscs); |
| 739 | |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 740 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 741 | local->fif_pspoll--; |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 742 | local->fif_probe_req--; |
| 743 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
| 744 | local->fif_probe_req--; |
| 745 | } |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 746 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 747 | if (sdata->dev) { |
| 748 | netif_addr_lock_bh(sdata->dev); |
| 749 | spin_lock_bh(&local->filter_lock); |
| 750 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
| 751 | sdata->dev->addr_len); |
| 752 | spin_unlock_bh(&local->filter_lock); |
| 753 | netif_addr_unlock_bh(sdata->dev); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 754 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 755 | ieee80211_configure_filter(local); |
| 756 | } |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 757 | |
Vivek Natarajan | 7cbf0ba | 2008-12-24 00:34:37 -0800 | [diff] [blame] | 758 | del_timer_sync(&local->dynamic_ps_timer); |
| 759 | cancel_work_sync(&local->dynamic_ps_enable_work); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 760 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 761 | cancel_work_sync(&sdata->recalc_smps); |
| 762 | |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 763 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
| 764 | |
| 765 | if (sdata->wdev.cac_started) { |
| 766 | mutex_lock(&local->iflist_mtx); |
| 767 | ieee80211_vif_release_channel(sdata); |
| 768 | mutex_unlock(&local->iflist_mtx); |
| 769 | cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, |
| 770 | GFP_KERNEL); |
| 771 | } |
| 772 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 773 | /* APs need special treatment */ |
| 774 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Johannes Berg | 57c9fff | 2009-07-29 15:46:21 +0200 | [diff] [blame] | 775 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 776 | |
| 777 | /* down all dependent devices, that is VLANs */ |
Johannes Berg | 57c9fff | 2009-07-29 15:46:21 +0200 | [diff] [blame] | 778 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 779 | u.vlan.list) |
| 780 | dev_close(vlan->dev); |
| 781 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); |
Michael Braun | 397a7a2 | 2013-02-13 16:49:15 +0100 | [diff] [blame] | 782 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
| 783 | /* remove all packets in parent bc_buf pointing to this dev */ |
| 784 | ps = &sdata->bss->ps; |
| 785 | |
| 786 | spin_lock_irqsave(&ps->bc_buf.lock, flags); |
| 787 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { |
| 788 | if (skb->dev == sdata->dev) { |
| 789 | __skb_unlink(skb, &ps->bc_buf); |
| 790 | local->total_ps_buffered--; |
| 791 | ieee80211_free_txskb(&local->hw, skb); |
| 792 | } |
| 793 | } |
| 794 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 795 | } |
| 796 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 797 | if (going_down) |
| 798 | local->open_count--; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 799 | |
| 800 | switch (sdata->vif.type) { |
| 801 | case NL80211_IFTYPE_AP_VLAN: |
| 802 | list_del(&sdata->u.vlan.list); |
Johannes Berg | 4d76d21 | 2012-12-11 20:38:41 +0100 | [diff] [blame] | 803 | rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 804 | /* no need to tell driver */ |
| 805 | break; |
| 806 | case NL80211_IFTYPE_MONITOR: |
| 807 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 808 | local->cooked_mntrs--; |
| 809 | break; |
| 810 | } |
| 811 | |
| 812 | local->monitors--; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 813 | if (local->monitors == 0) { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 814 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
| 815 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 816 | ieee80211_del_virtual_monitor(local); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 817 | } |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 818 | |
Christian Lamparter | 85416a4 | 2010-10-02 13:17:07 +0200 | [diff] [blame] | 819 | ieee80211_adjust_monitor_flags(sdata, -1); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 820 | ieee80211_configure_filter(local); |
Felix Fietkau | 801d929 | 2013-03-02 19:05:47 +0100 | [diff] [blame] | 821 | mutex_lock(&local->mtx); |
| 822 | ieee80211_recalc_idle(local); |
| 823 | mutex_unlock(&local->mtx); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 824 | break; |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 825 | case NL80211_IFTYPE_P2P_DEVICE: |
| 826 | /* relies on synchronize_rcu() below */ |
| 827 | rcu_assign_pointer(local->p2p_sdata, NULL); |
| 828 | /* fall through */ |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 829 | default: |
Johannes Berg | 0b7dff4 | 2012-12-05 09:49:14 +0100 | [diff] [blame] | 830 | cancel_work_sync(&sdata->work); |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 831 | /* |
| 832 | * When we get here, the interface is marked down. |
Johannes Berg | 75de911 | 2012-12-14 14:56:03 +0100 | [diff] [blame] | 833 | * |
| 834 | * sta_info_flush_cleanup() requires rcu_barrier() |
| 835 | * first to wait for the station call_rcu() calls |
| 836 | * to complete, here we need at least sychronize_rcu() |
| 837 | * it to wait for the RX path in case it is using the |
| 838 | * interface and enqueuing frames at this very time on |
| 839 | * another CPU. |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 840 | */ |
Johannes Berg | 75de911 | 2012-12-14 14:56:03 +0100 | [diff] [blame] | 841 | rcu_barrier(); |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 842 | sta_info_flush_cleanup(sdata); |
| 843 | |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 844 | skb_queue_purge(&sdata->skb_queue); |
| 845 | |
Bob Copeland | 97af743 | 2009-07-29 10:13:03 +0200 | [diff] [blame] | 846 | /* |
Johannes Berg | b9dcf71 | 2010-08-27 12:35:54 +0200 | [diff] [blame] | 847 | * Free all remaining keys, there shouldn't be any, |
| 848 | * except maybe group keys in AP more or WDS? |
| 849 | */ |
Johannes Berg | ad0e2b5 | 2010-06-01 10:19:19 +0200 | [diff] [blame] | 850 | ieee80211_free_keys(sdata); |
Johannes Berg | b9dcf71 | 2010-08-27 12:35:54 +0200 | [diff] [blame] | 851 | |
Alexander Bondar | b207cdb | 2012-12-22 10:43:33 +0200 | [diff] [blame] | 852 | drv_remove_interface_debugfs(local, sdata); |
| 853 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 854 | if (going_down) |
Johannes Berg | 7b7eab6 | 2011-11-03 14:41:13 +0100 | [diff] [blame] | 855 | drv_remove_interface(local, sdata); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | sdata->bss = NULL; |
| 859 | |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 860 | ieee80211_recalc_ps(local, -1); |
| 861 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 862 | if (local->open_count == 0) { |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 863 | if (local->ops->napi_poll) |
| 864 | napi_disable(&local->napi); |
Johannes Berg | ea77f12 | 2009-08-21 14:44:45 +0200 | [diff] [blame] | 865 | ieee80211_clear_tx_pending(local); |
Johannes Berg | 84f6a01 | 2009-08-20 20:02:20 +0200 | [diff] [blame] | 866 | ieee80211_stop_device(local); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 867 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 868 | /* no reconfiguring after stop! */ |
| 869 | hw_reconf_flags = 0; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 870 | } |
| 871 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 872 | /* do after stop to avoid reconfiguring when we stop anyway */ |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 873 | if (hw_reconf_flags) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 874 | ieee80211_hw_config(local, hw_reconf_flags); |
| 875 | |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 876 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| 877 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
| 878 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { |
| 879 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 880 | if (info->control.vif == &sdata->vif) { |
| 881 | __skb_unlink(skb, &local->pending[i]); |
Felix Fietkau | d4fa14c | 2012-10-10 22:40:23 +0200 | [diff] [blame] | 882 | ieee80211_free_txskb(&local->hw, skb); |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 883 | } |
| 884 | } |
| 885 | } |
| 886 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
Johannes Berg | 075e084 | 2012-07-12 19:28:31 +0200 | [diff] [blame] | 887 | |
| 888 | if (local->monitors == local->open_count && local->monitors > 0) |
| 889 | ieee80211_add_virtual_monitor(local); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | static int ieee80211_stop(struct net_device *dev) |
| 893 | { |
| 894 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 895 | |
| 896 | ieee80211_do_stop(sdata, true); |
Johannes Berg | 5061b0c | 2009-07-14 00:33:34 +0200 | [diff] [blame] | 897 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | static void ieee80211_set_multicast_list(struct net_device *dev) |
| 902 | { |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 903 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | b4a4bf5 | 2008-09-26 13:34:54 +0200 | [diff] [blame] | 904 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 905 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
| 906 | |
| 907 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
| 908 | promisc = !!(dev->flags & IFF_PROMISC); |
| 909 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
| 910 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); |
| 911 | |
| 912 | if (allmulti != sdata_allmulti) { |
| 913 | if (dev->flags & IFF_ALLMULTI) |
| 914 | atomic_inc(&local->iff_allmultis); |
| 915 | else |
| 916 | atomic_dec(&local->iff_allmultis); |
| 917 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
| 918 | } |
| 919 | |
| 920 | if (promisc != sdata_promisc) { |
| 921 | if (dev->flags & IFF_PROMISC) |
| 922 | atomic_inc(&local->iff_promiscs); |
| 923 | else |
| 924 | atomic_dec(&local->iff_promiscs); |
| 925 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
| 926 | } |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 927 | spin_lock_bh(&local->filter_lock); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 928 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 929 | spin_unlock_bh(&local->filter_lock); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 930 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 931 | } |
| 932 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 933 | /* |
| 934 | * Called when the netdev is removed or, by the code below, before |
| 935 | * the interface type changes. |
| 936 | */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 937 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 938 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 939 | int flushed; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 940 | int i; |
| 941 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 942 | /* free extra data */ |
| 943 | ieee80211_free_keys(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 944 | |
Jouni Malinen | aee14ce | 2008-09-09 16:33:15 +0200 | [diff] [blame] | 945 | ieee80211_debugfs_remove_netdev(sdata); |
| 946 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 947 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 948 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 949 | sdata->fragment_next = 0; |
| 950 | |
Johannes Berg | b9dcf71 | 2010-08-27 12:35:54 +0200 | [diff] [blame] | 951 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 952 | mesh_rmc_free(sdata); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 953 | |
Johannes Berg | b998e8b | 2012-12-13 23:07:46 +0100 | [diff] [blame] | 954 | flushed = sta_info_flush(sdata); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 955 | WARN_ON(flushed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 956 | } |
| 957 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 958 | static void ieee80211_uninit(struct net_device *dev) |
| 959 | { |
| 960 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); |
| 961 | } |
| 962 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 963 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
| 964 | struct sk_buff *skb) |
| 965 | { |
| 966 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); |
| 967 | } |
| 968 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 969 | static const struct net_device_ops ieee80211_dataif_ops = { |
| 970 | .ndo_open = ieee80211_open, |
| 971 | .ndo_stop = ieee80211_stop, |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 972 | .ndo_uninit = ieee80211_uninit, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 973 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 974 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 975 | .ndo_change_mtu = ieee80211_change_mtu, |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 976 | .ndo_set_mac_address = ieee80211_change_mac, |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 977 | .ndo_select_queue = ieee80211_netdev_select_queue, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 978 | }; |
| 979 | |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 980 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
| 981 | struct sk_buff *skb) |
| 982 | { |
| 983 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 984 | struct ieee80211_local *local = sdata->local; |
| 985 | struct ieee80211_hdr *hdr; |
| 986 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; |
| 987 | |
Johannes Berg | 32c5057 | 2012-03-28 11:04:29 +0200 | [diff] [blame] | 988 | if (local->hw.queues < IEEE80211_NUM_ACS) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 989 | return 0; |
| 990 | |
| 991 | if (skb->len < 4 || |
Johannes Berg | b49bb57 | 2010-01-08 19:00:00 +0100 | [diff] [blame] | 992 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 993 | return 0; /* doesn't matter, frame will be dropped */ |
| 994 | |
Johannes Berg | b49bb57 | 2010-01-08 19:00:00 +0100 | [diff] [blame] | 995 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 996 | |
Yoni Divinsky | 00e96de | 2012-06-20 15:39:13 +0300 | [diff] [blame] | 997 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 998 | } |
| 999 | |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1000 | static const struct net_device_ops ieee80211_monitorif_ops = { |
| 1001 | .ndo_open = ieee80211_open, |
| 1002 | .ndo_stop = ieee80211_stop, |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1003 | .ndo_uninit = ieee80211_uninit, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1004 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1005 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1006 | .ndo_change_mtu = ieee80211_change_mtu, |
| 1007 | .ndo_set_mac_address = eth_mac_addr, |
Johannes Berg | cf0277e | 2010-01-05 18:00:58 +0100 | [diff] [blame] | 1008 | .ndo_select_queue = ieee80211_monitor_select_queue, |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1009 | }; |
| 1010 | |
| 1011 | static void ieee80211_if_setup(struct net_device *dev) |
| 1012 | { |
| 1013 | ether_setup(dev); |
Neil Horman | 550fd08 | 2011-07-26 06:05:38 +0000 | [diff] [blame] | 1014 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1015 | dev->netdev_ops = &ieee80211_dataif_ops; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1016 | dev->destructor = free_netdev; |
| 1017 | } |
| 1018 | |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1019 | static void ieee80211_iface_work(struct work_struct *work) |
| 1020 | { |
| 1021 | struct ieee80211_sub_if_data *sdata = |
| 1022 | container_of(work, struct ieee80211_sub_if_data, work); |
| 1023 | struct ieee80211_local *local = sdata->local; |
| 1024 | struct sk_buff *skb; |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1025 | struct sta_info *sta; |
Johannes Berg | c1475ca | 2010-06-10 10:21:37 +0200 | [diff] [blame] | 1026 | struct ieee80211_ra_tid *ra_tid; |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1027 | |
| 1028 | if (!ieee80211_sdata_running(sdata)) |
| 1029 | return; |
| 1030 | |
| 1031 | if (local->scanning) |
| 1032 | return; |
| 1033 | |
| 1034 | /* |
| 1035 | * ieee80211_queue_work() should have picked up most cases, |
| 1036 | * here we'll pick the rest. |
| 1037 | */ |
| 1038 | if (WARN(local->suspended, |
| 1039 | "interface work scheduled while going to suspend\n")) |
| 1040 | return; |
| 1041 | |
| 1042 | /* first process frames */ |
| 1043 | while ((skb = skb_dequeue(&sdata->skb_queue))) { |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1044 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
| 1045 | |
Johannes Berg | c1475ca | 2010-06-10 10:21:37 +0200 | [diff] [blame] | 1046 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
| 1047 | ra_tid = (void *)&skb->cb; |
| 1048 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, |
| 1049 | ra_tid->tid); |
| 1050 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { |
| 1051 | ra_tid = (void *)&skb->cb; |
| 1052 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, |
| 1053 | ra_tid->tid); |
| 1054 | } else if (ieee80211_is_action(mgmt->frame_control) && |
| 1055 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1056 | int len = skb->len; |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1057 | |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1058 | mutex_lock(&local->sta_mtx); |
Felix Fietkau | 875ae5f | 2010-07-17 15:59:07 +0200 | [diff] [blame] | 1059 | sta = sta_info_get_bss(sdata, mgmt->sa); |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1060 | if (sta) { |
| 1061 | switch (mgmt->u.action.u.addba_req.action_code) { |
| 1062 | case WLAN_ACTION_ADDBA_REQ: |
| 1063 | ieee80211_process_addba_request( |
| 1064 | local, sta, mgmt, len); |
| 1065 | break; |
| 1066 | case WLAN_ACTION_ADDBA_RESP: |
| 1067 | ieee80211_process_addba_resp(local, sta, |
| 1068 | mgmt, len); |
| 1069 | break; |
| 1070 | case WLAN_ACTION_DELBA: |
| 1071 | ieee80211_process_delba(sdata, sta, |
| 1072 | mgmt, len); |
| 1073 | break; |
| 1074 | default: |
| 1075 | WARN_ON(1); |
| 1076 | break; |
| 1077 | } |
| 1078 | } |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1079 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1080 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
| 1081 | struct ieee80211_hdr *hdr = (void *)mgmt; |
| 1082 | /* |
| 1083 | * So the frame isn't mgmt, but frame_control |
| 1084 | * is at the right place anyway, of course, so |
| 1085 | * the if statement is correct. |
| 1086 | * |
| 1087 | * Warn if we have other data frame types here, |
| 1088 | * they must not get here. |
| 1089 | */ |
| 1090 | WARN_ON(hdr->frame_control & |
| 1091 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); |
| 1092 | WARN_ON(!(hdr->seq_ctrl & |
| 1093 | cpu_to_le16(IEEE80211_SCTL_FRAG))); |
| 1094 | /* |
| 1095 | * This was a fragment of a frame, received while |
| 1096 | * a block-ack session was active. That cannot be |
| 1097 | * right, so terminate the session. |
| 1098 | */ |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1099 | mutex_lock(&local->sta_mtx); |
Felix Fietkau | 875ae5f | 2010-07-17 15:59:07 +0200 | [diff] [blame] | 1100 | sta = sta_info_get_bss(sdata, mgmt->sa); |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1101 | if (sta) { |
| 1102 | u16 tid = *ieee80211_get_qos_ctl(hdr) & |
| 1103 | IEEE80211_QOS_CTL_TID_MASK; |
| 1104 | |
| 1105 | __ieee80211_stop_rx_ba_session( |
| 1106 | sta, tid, WLAN_BACK_RECIPIENT, |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 1107 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
| 1108 | true); |
Johannes Berg | 344eec6 | 2010-06-10 10:21:36 +0200 | [diff] [blame] | 1109 | } |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 1110 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | bed7ee6e | 2010-06-10 10:21:35 +0200 | [diff] [blame] | 1111 | } else switch (sdata->vif.type) { |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1112 | case NL80211_IFTYPE_STATION: |
| 1113 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
| 1114 | break; |
| 1115 | case NL80211_IFTYPE_ADHOC: |
| 1116 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); |
| 1117 | break; |
| 1118 | case NL80211_IFTYPE_MESH_POINT: |
| 1119 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
| 1120 | break; |
| 1121 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); |
| 1122 | break; |
| 1123 | default: |
| 1124 | WARN(1, "frame for unexpected interface type"); |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1125 | break; |
| 1126 | } |
Johannes Berg | 36b3a62 | 2010-06-10 10:21:33 +0200 | [diff] [blame] | 1127 | |
| 1128 | kfree_skb(skb); |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1129 | } |
| 1130 | |
| 1131 | /* then other type-dependent work */ |
| 1132 | switch (sdata->vif.type) { |
| 1133 | case NL80211_IFTYPE_STATION: |
| 1134 | ieee80211_sta_work(sdata); |
| 1135 | break; |
| 1136 | case NL80211_IFTYPE_ADHOC: |
| 1137 | ieee80211_ibss_work(sdata); |
| 1138 | break; |
| 1139 | case NL80211_IFTYPE_MESH_POINT: |
| 1140 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
| 1141 | break; |
| 1142 | ieee80211_mesh_work(sdata); |
| 1143 | break; |
| 1144 | default: |
| 1145 | break; |
| 1146 | } |
| 1147 | } |
| 1148 | |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1149 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
| 1150 | { |
| 1151 | struct ieee80211_sub_if_data *sdata = |
| 1152 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); |
| 1153 | |
| 1154 | ieee80211_recalc_smps(sdata); |
| 1155 | } |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1156 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1157 | /* |
| 1158 | * Helper function to initialise an interface to a specific type. |
| 1159 | */ |
| 1160 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1161 | enum nl80211_iftype type) |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1162 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1163 | /* clear type-dependent union */ |
| 1164 | memset(&sdata->u, 0, sizeof(sdata->u)); |
| 1165 | |
| 1166 | /* and set some type-dependent values */ |
| 1167 | sdata->vif.type = type; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1168 | sdata->vif.p2p = false; |
Johannes Berg | 60719ff | 2008-09-16 14:55:09 +0200 | [diff] [blame] | 1169 | sdata->wdev.iftype = type; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1170 | |
Johannes Berg | a621fa4 | 2010-08-27 14:26:54 +0300 | [diff] [blame] | 1171 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
| 1172 | sdata->control_port_no_encrypt = false; |
| 1173 | |
Simon Wunderlich | b53be79 | 2011-11-18 14:20:44 +0100 | [diff] [blame] | 1174 | sdata->noack_map = 0; |
| 1175 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1176 | /* only monitor/p2p-device differ */ |
| 1177 | if (sdata->dev) { |
| 1178 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
| 1179 | sdata->dev->type = ARPHRD_ETHER; |
| 1180 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1181 | |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 1182 | skb_queue_head_init(&sdata->skb_queue); |
Johannes Berg | 1fa57d0 | 2010-06-10 10:21:32 +0200 | [diff] [blame] | 1183 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
Johannes Berg | 04ecd25 | 2012-09-11 14:34:12 +0200 | [diff] [blame] | 1184 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
Johannes Berg | 35f20c1 | 2010-06-10 10:21:30 +0200 | [diff] [blame] | 1185 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1186 | switch (type) { |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1187 | case NL80211_IFTYPE_P2P_GO: |
| 1188 | type = NL80211_IFTYPE_AP; |
| 1189 | sdata->vif.type = type; |
| 1190 | sdata->vif.p2p = true; |
| 1191 | /* fall through */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1192 | case NL80211_IFTYPE_AP: |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 1193 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1194 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1195 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1196 | break; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1197 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1198 | type = NL80211_IFTYPE_STATION; |
| 1199 | sdata->vif.type = type; |
| 1200 | sdata->vif.p2p = true; |
| 1201 | /* fall through */ |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1202 | case NL80211_IFTYPE_STATION: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1203 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
Johannes Berg | 9c6bd79 | 2008-09-11 00:01:52 +0200 | [diff] [blame] | 1204 | ieee80211_sta_setup_sdata(sdata); |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame] | 1205 | break; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1206 | case NL80211_IFTYPE_ADHOC: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1207 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
Johannes Berg | 4690029 | 2009-02-15 12:44:28 +0100 | [diff] [blame] | 1208 | ieee80211_ibss_setup_sdata(sdata); |
| 1209 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1210 | case NL80211_IFTYPE_MESH_POINT: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1211 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 1212 | ieee80211_mesh_init_sdata(sdata); |
| 1213 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1214 | case NL80211_IFTYPE_MONITOR: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1215 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
Johannes Berg | 587e729 | 2009-01-30 13:35:22 +0100 | [diff] [blame] | 1216 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1217 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
| 1218 | MONITOR_FLAG_OTHER_BSS; |
| 1219 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1220 | case NL80211_IFTYPE_WDS: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1221 | sdata->vif.bss_conf.bssid = NULL; |
| 1222 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1223 | case NL80211_IFTYPE_AP_VLAN: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1224 | break; |
Johannes Berg | 98104fde | 2012-06-16 00:19:54 +0200 | [diff] [blame] | 1225 | case NL80211_IFTYPE_P2P_DEVICE: |
Johannes Berg | ad2d223 | 2012-12-14 14:34:25 +0100 | [diff] [blame] | 1226 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1227 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1228 | case NL80211_IFTYPE_UNSPECIFIED: |
Johannes Berg | 2e161f7 | 2010-08-12 15:38:38 +0200 | [diff] [blame] | 1229 | case NUM_NL80211_IFTYPES: |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1230 | BUG(); |
| 1231 | break; |
| 1232 | } |
| 1233 | |
| 1234 | ieee80211_debugfs_add_netdev(sdata); |
| 1235 | } |
| 1236 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1237 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
| 1238 | enum nl80211_iftype type) |
| 1239 | { |
| 1240 | struct ieee80211_local *local = sdata->local; |
| 1241 | int ret, err; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1242 | enum nl80211_iftype internal_type = type; |
| 1243 | bool p2p = false; |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1244 | |
| 1245 | ASSERT_RTNL(); |
| 1246 | |
| 1247 | if (!local->ops->change_interface) |
| 1248 | return -EBUSY; |
| 1249 | |
| 1250 | switch (sdata->vif.type) { |
| 1251 | case NL80211_IFTYPE_AP: |
| 1252 | case NL80211_IFTYPE_STATION: |
| 1253 | case NL80211_IFTYPE_ADHOC: |
| 1254 | /* |
| 1255 | * Could maybe also all others here? |
| 1256 | * Just not sure how that interacts |
| 1257 | * with the RX/config path e.g. for |
| 1258 | * mesh. |
| 1259 | */ |
| 1260 | break; |
| 1261 | default: |
| 1262 | return -EBUSY; |
| 1263 | } |
| 1264 | |
| 1265 | switch (type) { |
| 1266 | case NL80211_IFTYPE_AP: |
| 1267 | case NL80211_IFTYPE_STATION: |
| 1268 | case NL80211_IFTYPE_ADHOC: |
| 1269 | /* |
| 1270 | * Could probably support everything |
| 1271 | * but WDS here (WDS do_open can fail |
| 1272 | * under memory pressure, which this |
| 1273 | * code isn't prepared to handle). |
| 1274 | */ |
| 1275 | break; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1276 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1277 | p2p = true; |
| 1278 | internal_type = NL80211_IFTYPE_STATION; |
| 1279 | break; |
| 1280 | case NL80211_IFTYPE_P2P_GO: |
| 1281 | p2p = true; |
| 1282 | internal_type = NL80211_IFTYPE_AP; |
| 1283 | break; |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1284 | default: |
| 1285 | return -EBUSY; |
| 1286 | } |
| 1287 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1288 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1289 | if (ret) |
| 1290 | return ret; |
| 1291 | |
| 1292 | ieee80211_do_stop(sdata, false); |
| 1293 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1294 | ieee80211_teardown_sdata(sdata); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1295 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1296 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1297 | if (ret) |
| 1298 | type = sdata->vif.type; |
| 1299 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 1300 | /* |
| 1301 | * Ignore return value here, there's not much we can do since |
| 1302 | * the driver changed the interface type internally already. |
| 1303 | * The warnings will hopefully make driver authors fix it :-) |
| 1304 | */ |
| 1305 | ieee80211_check_queues(sdata); |
| 1306 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1307 | ieee80211_setup_sdata(sdata, type); |
| 1308 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1309 | err = ieee80211_do_open(&sdata->wdev, false); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1310 | WARN(err, "type change: do_open returned %d", err); |
| 1311 | |
| 1312 | return ret; |
| 1313 | } |
| 1314 | |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1315 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1316 | enum nl80211_iftype type) |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1317 | { |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1318 | int ret; |
| 1319 | |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1320 | ASSERT_RTNL(); |
| 1321 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1322 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1323 | return 0; |
| 1324 | |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1325 | if (ieee80211_sdata_running(sdata)) { |
| 1326 | ret = ieee80211_runtime_change_iftype(sdata, type); |
| 1327 | if (ret) |
| 1328 | return ret; |
| 1329 | } else { |
| 1330 | /* Purge and reset type-dependent state. */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1331 | ieee80211_teardown_sdata(sdata); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1332 | ieee80211_setup_sdata(sdata, type); |
| 1333 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1334 | |
| 1335 | /* reset some values that shouldn't be kept across type changes */ |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1336 | sdata->drop_unencrypted = 0; |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 1337 | if (type == NL80211_IFTYPE_STATION) |
| 1338 | sdata->u.mgd.use_4addr = false; |
Johannes Berg | f3947e2 | 2008-07-09 14:40:36 +0200 | [diff] [blame] | 1339 | |
| 1340 | return 0; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1341 | } |
| 1342 | |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1343 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1344 | u8 *perm_addr, enum nl80211_iftype type) |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1345 | { |
| 1346 | struct ieee80211_sub_if_data *sdata; |
| 1347 | u64 mask, start, addr, val, inc; |
| 1348 | u8 *m; |
| 1349 | u8 tmp_addr[ETH_ALEN]; |
| 1350 | int i; |
| 1351 | |
| 1352 | /* default ... something at least */ |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1353 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1354 | |
| 1355 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && |
| 1356 | local->hw.wiphy->n_addresses <= 1) |
| 1357 | return; |
| 1358 | |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1359 | mutex_lock(&local->iflist_mtx); |
| 1360 | |
| 1361 | switch (type) { |
| 1362 | case NL80211_IFTYPE_MONITOR: |
| 1363 | /* doesn't matter */ |
| 1364 | break; |
| 1365 | case NL80211_IFTYPE_WDS: |
| 1366 | case NL80211_IFTYPE_AP_VLAN: |
| 1367 | /* match up with an AP interface */ |
| 1368 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1369 | if (sdata->vif.type != NL80211_IFTYPE_AP) |
| 1370 | continue; |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1371 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1372 | break; |
| 1373 | } |
| 1374 | /* keep default if no AP interface present */ |
| 1375 | break; |
Johannes Berg | 6d71117 | 2012-06-19 17:19:44 +0200 | [diff] [blame] | 1376 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1377 | case NL80211_IFTYPE_P2P_GO: |
| 1378 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { |
| 1379 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1380 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
| 1381 | continue; |
| 1382 | if (!ieee80211_sdata_running(sdata)) |
| 1383 | continue; |
| 1384 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
| 1385 | goto out_unlock; |
| 1386 | } |
| 1387 | } |
| 1388 | /* otherwise fall through */ |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1389 | default: |
| 1390 | /* assign a new address if possible -- try n_addresses first */ |
| 1391 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { |
| 1392 | bool used = false; |
| 1393 | |
| 1394 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1395 | if (memcmp(local->hw.wiphy->addresses[i].addr, |
| 1396 | sdata->vif.addr, ETH_ALEN) == 0) { |
| 1397 | used = true; |
| 1398 | break; |
| 1399 | } |
| 1400 | } |
| 1401 | |
| 1402 | if (!used) { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1403 | memcpy(perm_addr, |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1404 | local->hw.wiphy->addresses[i].addr, |
| 1405 | ETH_ALEN); |
| 1406 | break; |
| 1407 | } |
| 1408 | } |
| 1409 | |
| 1410 | /* try mask if available */ |
| 1411 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) |
| 1412 | break; |
| 1413 | |
| 1414 | m = local->hw.wiphy->addr_mask; |
| 1415 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 1416 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 1417 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 1418 | |
| 1419 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { |
| 1420 | /* not a contiguous mask ... not handled now! */ |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1421 | pr_info("not contiguous\n"); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1422 | break; |
| 1423 | } |
| 1424 | |
| 1425 | m = local->hw.wiphy->perm_addr; |
| 1426 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
| 1427 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | |
| 1428 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); |
| 1429 | |
| 1430 | inc = 1ULL<<__ffs64(mask); |
| 1431 | val = (start & mask); |
| 1432 | addr = (start & ~mask) | (val & mask); |
| 1433 | do { |
| 1434 | bool used = false; |
| 1435 | |
| 1436 | tmp_addr[5] = addr >> 0*8; |
| 1437 | tmp_addr[4] = addr >> 1*8; |
| 1438 | tmp_addr[3] = addr >> 2*8; |
| 1439 | tmp_addr[2] = addr >> 3*8; |
| 1440 | tmp_addr[1] = addr >> 4*8; |
| 1441 | tmp_addr[0] = addr >> 5*8; |
| 1442 | |
| 1443 | val += inc; |
| 1444 | |
| 1445 | list_for_each_entry(sdata, &local->interfaces, list) { |
| 1446 | if (memcmp(tmp_addr, sdata->vif.addr, |
| 1447 | ETH_ALEN) == 0) { |
| 1448 | used = true; |
| 1449 | break; |
| 1450 | } |
| 1451 | } |
| 1452 | |
| 1453 | if (!used) { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1454 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1455 | break; |
| 1456 | } |
| 1457 | addr = (start & ~mask) | (val & mask); |
| 1458 | } while (addr != start); |
| 1459 | |
| 1460 | break; |
| 1461 | } |
| 1462 | |
Johannes Berg | 6d71117 | 2012-06-19 17:19:44 +0200 | [diff] [blame] | 1463 | out_unlock: |
Johannes Berg | fa9029f | 2010-02-25 15:13:11 +0100 | [diff] [blame] | 1464 | mutex_unlock(&local->iflist_mtx); |
| 1465 | } |
| 1466 | |
Johannes Berg | 97f97b1 | 2012-12-13 22:54:58 +0100 | [diff] [blame] | 1467 | static void ieee80211_cleanup_sdata_stas_wk(struct work_struct *wk) |
| 1468 | { |
| 1469 | struct ieee80211_sub_if_data *sdata; |
| 1470 | |
| 1471 | sdata = container_of(wk, struct ieee80211_sub_if_data, cleanup_stations_wk); |
| 1472 | |
| 1473 | ieee80211_cleanup_sdata_stas(sdata); |
| 1474 | } |
| 1475 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1476 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
Johannes Berg | 84efbb8 | 2012-06-16 00:00:26 +0200 | [diff] [blame] | 1477 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 1478 | struct vif_params *params) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1479 | { |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1480 | struct net_device *ndev = NULL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1481 | struct ieee80211_sub_if_data *sdata = NULL; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1482 | int ret, i; |
Johannes Berg | ded81f6 | 2012-03-28 11:04:26 +0200 | [diff] [blame] | 1483 | int txqs = 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1484 | |
| 1485 | ASSERT_RTNL(); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1486 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1487 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
| 1488 | struct wireless_dev *wdev; |
Johannes Berg | ded81f6 | 2012-03-28 11:04:26 +0200 | [diff] [blame] | 1489 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1490 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, |
| 1491 | GFP_KERNEL); |
| 1492 | if (!sdata) |
| 1493 | return -ENOMEM; |
| 1494 | wdev = &sdata->wdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1495 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1496 | sdata->dev = NULL; |
| 1497 | strlcpy(sdata->name, name, IFNAMSIZ); |
| 1498 | ieee80211_assign_perm_addr(local, wdev->address, type); |
| 1499 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); |
| 1500 | } else { |
| 1501 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
| 1502 | txqs = IEEE80211_NUM_ACS; |
Johannes Berg | f3994ec | 2008-05-12 20:51:44 -0700 | [diff] [blame] | 1503 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1504 | ndev = alloc_netdev_mqs(sizeof(*sdata) + |
| 1505 | local->hw.vif_data_size, |
| 1506 | name, ieee80211_if_setup, txqs, 1); |
| 1507 | if (!ndev) |
| 1508 | return -ENOMEM; |
| 1509 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
Thadeu Lima de Souza Cascardo | 59e7e70 | 2011-06-02 17:28:37 -0300 | [diff] [blame] | 1510 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1511 | ndev->needed_headroom = local->tx_headroom + |
| 1512 | 4*6 /* four MAC addresses */ |
| 1513 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ |
| 1514 | + 6 /* mesh */ |
| 1515 | + 8 /* rfc1042/bridge tunnel */ |
| 1516 | - ETH_HLEN /* ethernet hard_header_len */ |
| 1517 | + IEEE80211_ENCRYPT_HEADROOM; |
| 1518 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1519 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1520 | ret = dev_alloc_name(ndev, ndev->name); |
| 1521 | if (ret < 0) { |
| 1522 | free_netdev(ndev); |
| 1523 | return ret; |
| 1524 | } |
| 1525 | |
| 1526 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); |
| 1527 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); |
| 1528 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
| 1529 | |
| 1530 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ |
| 1531 | sdata = netdev_priv(ndev); |
| 1532 | ndev->ieee80211_ptr = &sdata->wdev; |
| 1533 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
| 1534 | memcpy(sdata->name, ndev->name, IFNAMSIZ); |
| 1535 | |
| 1536 | sdata->dev = ndev; |
| 1537 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1538 | |
| 1539 | /* initialise type-independent data */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1540 | sdata->wdev.wiphy = local->hw.wiphy; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1541 | sdata->local = local; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1542 | |
| 1543 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
| 1544 | skb_queue_head_init(&sdata->fragments[i].skb_list); |
| 1545 | |
| 1546 | INIT_LIST_HEAD(&sdata->key_list); |
| 1547 | |
Johannes Berg | 97f97b1 | 2012-12-13 22:54:58 +0100 | [diff] [blame] | 1548 | spin_lock_init(&sdata->cleanup_stations_lock); |
| 1549 | INIT_LIST_HEAD(&sdata->cleanup_stations); |
| 1550 | INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk); |
Simon Wunderlich | 164eb02 | 2013-02-08 18:16:20 +0100 | [diff] [blame] | 1551 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
| 1552 | ieee80211_dfs_cac_timer_work); |
Johannes Berg | 97f97b1 | 2012-12-13 22:54:58 +0100 | [diff] [blame] | 1553 | |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 1554 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
| 1555 | struct ieee80211_supported_band *sband; |
| 1556 | sband = local->hw.wiphy->bands[i]; |
| 1557 | sdata->rc_rateidx_mask[i] = |
| 1558 | sband ? (1 << sband->n_bitrates) - 1 : 0; |
Simon Wunderlich | 1946841 | 2012-01-28 17:25:33 +0100 | [diff] [blame] | 1559 | if (sband) |
| 1560 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
| 1561 | sband->ht_cap.mcs.rx_mask, |
| 1562 | sizeof(sdata->rc_rateidx_mcs_mask[i])); |
| 1563 | else |
| 1564 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
| 1565 | sizeof(sdata->rc_rateidx_mcs_mask[i])); |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 1566 | } |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1567 | |
Johannes Berg | 3a25a8c | 2012-04-03 16:28:50 +0200 | [diff] [blame] | 1568 | ieee80211_set_default_queues(sdata); |
| 1569 | |
Johannes Berg | 1ea6f9c | 2012-10-24 10:59:25 +0200 | [diff] [blame] | 1570 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
| 1571 | sdata->user_power_level = local->user_power_level; |
| 1572 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1573 | /* setup type-dependent data */ |
| 1574 | ieee80211_setup_sdata(sdata, type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1575 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1576 | if (ndev) { |
| 1577 | if (params) { |
| 1578 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; |
| 1579 | if (type == NL80211_IFTYPE_STATION) |
| 1580 | sdata->u.mgd.use_4addr = params->use_4addr; |
| 1581 | } |
| 1582 | |
| 1583 | ndev->features |= local->hw.netdev_features; |
| 1584 | |
| 1585 | ret = register_netdevice(ndev); |
| 1586 | if (ret) { |
| 1587 | free_netdev(ndev); |
| 1588 | return ret; |
| 1589 | } |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 1590 | } |
| 1591 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1592 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1593 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1594 | mutex_unlock(&local->iflist_mtx); |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1595 | |
Johannes Berg | 84efbb8 | 2012-06-16 00:00:26 +0200 | [diff] [blame] | 1596 | if (new_wdev) |
| 1597 | *new_wdev = &sdata->wdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1598 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1599 | return 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1600 | } |
| 1601 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1602 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1603 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1604 | ASSERT_RTNL(); |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1605 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1606 | mutex_lock(&sdata->local->iflist_mtx); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1607 | list_del_rcu(&sdata->list); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1608 | mutex_unlock(&sdata->local->iflist_mtx); |
| 1609 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1610 | synchronize_rcu(); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1611 | |
| 1612 | if (sdata->dev) { |
| 1613 | unregister_netdevice(sdata->dev); |
| 1614 | } else { |
| 1615 | cfg80211_unregister_wdev(&sdata->wdev); |
| 1616 | kfree(sdata); |
| 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) |
| 1621 | { |
| 1622 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) |
| 1623 | return; |
| 1624 | ieee80211_do_stop(sdata, true); |
| 1625 | ieee80211_teardown_sdata(sdata); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1626 | } |
| 1627 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1628 | /* |
| 1629 | * Remove all interfaces, may only be called at hardware unregistration |
| 1630 | * time because it doesn't do RCU-safe list removals. |
| 1631 | */ |
| 1632 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1633 | { |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1634 | struct ieee80211_sub_if_data *sdata, *tmp; |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 1635 | LIST_HEAD(unreg_list); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1636 | LIST_HEAD(wdev_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1637 | |
| 1638 | ASSERT_RTNL(); |
| 1639 | |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 1640 | mutex_lock(&local->iflist_mtx); |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1641 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
| 1642 | list_del(&sdata->list); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1643 | |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1644 | if (sdata->dev) |
| 1645 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
| 1646 | else |
| 1647 | list_add(&sdata->list, &wdev_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1648 | } |
Eric Dumazet | efe117a | 2009-11-05 11:06:40 +0100 | [diff] [blame] | 1649 | mutex_unlock(&local->iflist_mtx); |
| 1650 | unregister_netdevice_many(&unreg_list); |
Eric W. Biederman | 5f04d50 | 2011-02-20 11:49:45 -0800 | [diff] [blame] | 1651 | list_del(&unreg_list); |
Johannes Berg | f142c6b | 2012-06-18 20:07:15 +0200 | [diff] [blame] | 1652 | |
| 1653 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { |
| 1654 | list_del(&sdata->list); |
| 1655 | cfg80211_unregister_wdev(&sdata->wdev); |
| 1656 | kfree(sdata); |
| 1657 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1658 | } |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 1659 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1660 | static int netdev_notify(struct notifier_block *nb, |
| 1661 | unsigned long state, |
| 1662 | void *ndev) |
| 1663 | { |
| 1664 | struct net_device *dev = ndev; |
| 1665 | struct ieee80211_sub_if_data *sdata; |
| 1666 | |
| 1667 | if (state != NETDEV_CHANGENAME) |
| 1668 | return 0; |
| 1669 | |
| 1670 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) |
| 1671 | return 0; |
| 1672 | |
| 1673 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) |
| 1674 | return 0; |
| 1675 | |
| 1676 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 1677 | |
Johannes Berg | 2f5265e | 2010-02-12 10:45:05 +0100 | [diff] [blame] | 1678 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 1679 | |
| 1680 | ieee80211_debugfs_rename_netdev(sdata); |
| 1681 | return 0; |
| 1682 | } |
| 1683 | |
| 1684 | static struct notifier_block mac80211_netdev_notifier = { |
| 1685 | .notifier_call = netdev_notify, |
| 1686 | }; |
| 1687 | |
| 1688 | int ieee80211_iface_init(void) |
| 1689 | { |
| 1690 | return register_netdevice_notifier(&mac80211_netdev_notifier); |
| 1691 | } |
| 1692 | |
| 1693 | void ieee80211_iface_exit(void) |
| 1694 | { |
| 1695 | unregister_netdevice_notifier(&mac80211_netdev_notifier); |
| 1696 | } |