Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 3 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <net/mac80211.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 12 | #include <linux/module.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/netdevice.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/skbuff.h> |
| 18 | #include <linux/etherdevice.h> |
| 19 | #include <linux/if_arp.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 20 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 21 | #include <linux/bitmap.h> |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 22 | #include <linux/pm_qos_params.h> |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 23 | #include <net/net_namespace.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 24 | #include <net/cfg80211.h> |
| 25 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 26 | #include "ieee80211_i.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 27 | #include "driver-ops.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 28 | #include "rate.h" |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 29 | #include "mesh.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 30 | #include "wep.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 31 | #include "led.h" |
Michael Wu | e0eb685 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 32 | #include "cfg.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 33 | #include "debugfs.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 34 | |
Johannes Berg | f38fd12 | 2009-12-01 18:29:42 +0100 | [diff] [blame] | 35 | |
| 36 | bool ieee80211_disable_40mhz_24ghz; |
| 37 | module_param(ieee80211_disable_40mhz_24ghz, bool, 0644); |
| 38 | MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz, |
| 39 | "Disable 40MHz support in the 2.4GHz band"); |
| 40 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 41 | void ieee80211_configure_filter(struct ieee80211_local *local) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 42 | { |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 43 | u64 mc; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 44 | unsigned int changed_flags; |
| 45 | unsigned int new_flags = 0; |
| 46 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 47 | if (atomic_read(&local->iff_promiscs)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 48 | new_flags |= FIF_PROMISC_IN_BSS; |
| 49 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 50 | if (atomic_read(&local->iff_allmultis)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 51 | new_flags |= FIF_ALLMULTI; |
| 52 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 53 | if (local->monitors || local->scanning) |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 54 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
| 55 | |
| 56 | if (local->fif_fcsfail) |
| 57 | new_flags |= FIF_FCSFAIL; |
| 58 | |
| 59 | if (local->fif_plcpfail) |
| 60 | new_flags |= FIF_PLCPFAIL; |
| 61 | |
| 62 | if (local->fif_control) |
| 63 | new_flags |= FIF_CONTROL; |
| 64 | |
| 65 | if (local->fif_other_bss) |
| 66 | new_flags |= FIF_OTHER_BSS; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 67 | |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 68 | if (local->fif_pspoll) |
| 69 | new_flags |= FIF_PSPOLL; |
| 70 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 71 | spin_lock_bh(&local->filter_lock); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 72 | changed_flags = local->filter_flags ^ new_flags; |
| 73 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 74 | mc = drv_prepare_multicast(local, &local->mc_list); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 75 | spin_unlock_bh(&local->filter_lock); |
| 76 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 77 | /* be a bit nasty */ |
| 78 | new_flags |= (1<<31); |
| 79 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 80 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 81 | |
| 82 | WARN_ON(new_flags & (1<<31)); |
| 83 | |
| 84 | local->filter_flags = new_flags & ~(1<<31); |
| 85 | } |
| 86 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 87 | static void ieee80211_reconfig_filter(struct work_struct *work) |
| 88 | { |
| 89 | struct ieee80211_local *local = |
| 90 | container_of(work, struct ieee80211_local, reconfig_filter); |
| 91 | |
| 92 | ieee80211_configure_filter(local); |
| 93 | } |
| 94 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 95 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 96 | { |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 97 | struct ieee80211_channel *chan, *scan_chan; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 98 | int ret = 0; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 99 | int power; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 100 | enum nl80211_channel_type channel_type; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 101 | |
Johannes Berg | cb121ba | 2008-10-14 16:38:55 +0200 | [diff] [blame] | 102 | might_sleep(); |
| 103 | |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 104 | scan_chan = local->scan_channel; |
| 105 | |
| 106 | if (scan_chan) { |
| 107 | chan = scan_chan; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 108 | channel_type = NL80211_CHAN_NO_HT; |
Johannes Berg | b8bc4b0 | 2009-12-23 13:15:42 +0100 | [diff] [blame] | 109 | } else if (local->tmp_channel) { |
| 110 | chan = scan_chan = local->tmp_channel; |
| 111 | channel_type = local->tmp_channel_type; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 112 | } else { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 113 | chan = local->oper_channel; |
Johannes Berg | 0aaffa9 | 2010-05-05 15:28:27 +0200 | [diff] [blame] | 114 | channel_type = local->_oper_channel_type; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 115 | } |
| 116 | |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 117 | if (chan != local->hw.conf.channel || |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 118 | channel_type != local->hw.conf.channel_type) { |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 119 | local->hw.conf.channel = chan; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 120 | local->hw.conf.channel_type = channel_type; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 121 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
| 122 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 123 | |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 124 | if (!conf_is_ht(&local->hw.conf)) { |
| 125 | /* |
| 126 | * mac80211.h documents that this is only valid |
| 127 | * when the channel is set to an HT type, and |
| 128 | * that otherwise STATIC is used. |
| 129 | */ |
| 130 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; |
| 131 | } else if (local->hw.conf.smps_mode != local->smps_mode) { |
| 132 | local->hw.conf.smps_mode = local->smps_mode; |
| 133 | changed |= IEEE80211_CONF_CHANGE_SMPS; |
| 134 | } |
| 135 | |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 136 | if (scan_chan) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 137 | power = chan->max_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 138 | else |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 139 | power = local->power_constr_level ? |
| 140 | (chan->max_power - local->power_constr_level) : |
| 141 | chan->max_power; |
| 142 | |
Johannes Berg | 47afbaf | 2009-04-07 15:22:28 +0200 | [diff] [blame] | 143 | if (local->user_power_level >= 0) |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 144 | power = min(power, local->user_power_level); |
| 145 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 146 | if (local->hw.conf.power_level != power) { |
| 147 | changed |= IEEE80211_CONF_CHANGE_POWER; |
| 148 | local->hw.conf.power_level = power; |
| 149 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 150 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 151 | if (changed && local->open_count) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 152 | ret = drv_config(local, changed); |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 153 | /* |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 154 | * Goal: |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 155 | * HW reconfiguration should never fail, the driver has told |
| 156 | * us what it can support so it should live up to that promise. |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 157 | * |
| 158 | * Current status: |
| 159 | * rfkill is not integrated with mac80211 and a |
| 160 | * configuration command can thus fail if hardware rfkill |
| 161 | * is enabled |
| 162 | * |
| 163 | * FIXME: integrate rfkill with mac80211 and then add this |
| 164 | * WARN_ON() back |
| 165 | * |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 166 | */ |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 167 | /* WARN_ON(ret); */ |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 168 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 169 | |
| 170 | return ret; |
| 171 | } |
| 172 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 173 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| 174 | u32 changed) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 175 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 176 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 9cef873 | 2009-05-14 13:10:14 +0200 | [diff] [blame] | 177 | static const u8 zero[ETH_ALEN] = { 0 }; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 178 | |
| 179 | if (!changed) |
| 180 | return; |
| 181 | |
Johannes Berg | 9cef873 | 2009-05-14 13:10:14 +0200 | [diff] [blame] | 182 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
| 183 | /* |
| 184 | * While not associated, claim a BSSID of all-zeroes |
| 185 | * so that drivers don't do any weird things with the |
| 186 | * BSSID at that time. |
| 187 | */ |
| 188 | if (sdata->vif.bss_conf.assoc) |
| 189 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
| 190 | else |
| 191 | sdata->vif.bss_conf.bssid = zero; |
| 192 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 193 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
| 194 | else if (sdata->vif.type == NL80211_IFTYPE_AP) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 195 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 196 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 197 | sdata->vif.bss_conf.bssid = zero; |
| 198 | } else { |
| 199 | WARN_ON(1); |
| 200 | return; |
| 201 | } |
| 202 | |
| 203 | switch (sdata->vif.type) { |
| 204 | case NL80211_IFTYPE_AP: |
| 205 | case NL80211_IFTYPE_ADHOC: |
| 206 | case NL80211_IFTYPE_MESH_POINT: |
| 207 | break; |
| 208 | default: |
| 209 | /* do not warn to simplify caller in scan.c */ |
| 210 | changed &= ~BSS_CHANGED_BEACON_ENABLED; |
| 211 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) |
| 212 | return; |
| 213 | break; |
| 214 | } |
| 215 | |
| 216 | if (changed & BSS_CHANGED_BEACON_ENABLED) { |
Johannes Berg | 9607e6b | 2009-12-23 13:15:31 +0100 | [diff] [blame] | 217 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
Bob Copeland | 97af743 | 2009-07-29 10:13:03 +0200 | [diff] [blame] | 218 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 219 | sdata->vif.bss_conf.enable_beacon = false; |
| 220 | } else { |
| 221 | /* |
| 222 | * Beacon should be enabled, but AP mode must |
| 223 | * check whether there is a beacon configured. |
| 224 | */ |
| 225 | switch (sdata->vif.type) { |
| 226 | case NL80211_IFTYPE_AP: |
| 227 | sdata->vif.bss_conf.enable_beacon = |
Johannes Berg | 0379185 | 2010-04-06 11:18:42 +0200 | [diff] [blame] | 228 | !!sdata->u.ap.beacon; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 229 | break; |
| 230 | case NL80211_IFTYPE_ADHOC: |
| 231 | sdata->vif.bss_conf.enable_beacon = |
Johannes Berg | 0379185 | 2010-04-06 11:18:42 +0200 | [diff] [blame] | 232 | !!sdata->u.ibss.presp; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 233 | break; |
| 234 | case NL80211_IFTYPE_MESH_POINT: |
| 235 | sdata->vif.bss_conf.enable_beacon = true; |
| 236 | break; |
| 237 | default: |
| 238 | /* not reached */ |
| 239 | WARN_ON(1); |
| 240 | break; |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | |
Johannes Berg | 12375ef | 2009-11-25 20:30:31 +0100 | [diff] [blame] | 245 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 246 | } |
| 247 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 248 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 249 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 250 | sdata->vif.bss_conf.use_cts_prot = false; |
| 251 | sdata->vif.bss_conf.use_short_preamble = false; |
| 252 | sdata->vif.bss_conf.use_short_slot = false; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 253 | return BSS_CHANGED_ERP_CTS_PROT | |
| 254 | BSS_CHANGED_ERP_PREAMBLE | |
| 255 | BSS_CHANGED_ERP_SLOT; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 256 | } |
| 257 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 258 | static void ieee80211_tasklet_handler(unsigned long data) |
| 259 | { |
| 260 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 261 | struct sk_buff *skb; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 262 | |
| 263 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 264 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 265 | switch (skb->pkt_type) { |
| 266 | case IEEE80211_RX_MSG: |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 267 | /* Clear skb->pkt_type in order to not confuse kernel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 268 | * netstack. */ |
| 269 | skb->pkt_type = 0; |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 270 | ieee80211_rx(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 271 | break; |
| 272 | case IEEE80211_TX_STATUS_MSG: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 273 | skb->pkt_type = 0; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 274 | ieee80211_tx_status(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 275 | break; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 276 | default: |
Larry Finger | 5e3f308 | 2008-12-17 14:26:59 -0600 | [diff] [blame] | 277 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
| 278 | skb->pkt_type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 279 | dev_kfree_skb(skb); |
| 280 | break; |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 285 | static void ieee80211_restart_work(struct work_struct *work) |
| 286 | { |
| 287 | struct ieee80211_local *local = |
| 288 | container_of(work, struct ieee80211_local, restart_work); |
| 289 | |
| 290 | rtnl_lock(); |
| 291 | ieee80211_reconfig(local); |
| 292 | rtnl_unlock(); |
| 293 | } |
| 294 | |
| 295 | void ieee80211_restart_hw(struct ieee80211_hw *hw) |
| 296 | { |
| 297 | struct ieee80211_local *local = hw_to_local(hw); |
| 298 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 299 | trace_api_restart_hw(local); |
| 300 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 301 | /* use this reason, __ieee80211_resume will unblock it */ |
| 302 | ieee80211_stop_queues_by_reason(hw, |
| 303 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| 304 | |
| 305 | schedule_work(&local->restart_work); |
| 306 | } |
| 307 | EXPORT_SYMBOL(ieee80211_restart_hw); |
| 308 | |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 309 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
| 310 | { |
| 311 | struct ieee80211_local *local = |
| 312 | container_of(work, struct ieee80211_local, recalc_smps); |
| 313 | |
| 314 | mutex_lock(&local->iflist_mtx); |
| 315 | ieee80211_recalc_smps(local, NULL); |
| 316 | mutex_unlock(&local->iflist_mtx); |
| 317 | } |
| 318 | |
John W. Linville | 26b36cf | 2010-06-04 14:25:44 -0400 | [diff] [blame] | 319 | #ifdef CONFIG_INET |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 320 | int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata) |
| 321 | { |
| 322 | struct in_device *idev; |
| 323 | int ret = 0; |
| 324 | |
| 325 | BUG_ON(!sdata); |
| 326 | ASSERT_RTNL(); |
| 327 | |
| 328 | idev = sdata->dev->ip_ptr; |
| 329 | if (!idev) |
| 330 | return 0; |
| 331 | |
| 332 | ret = drv_configure_arp_filter(sdata->local, &sdata->vif, |
| 333 | idev->ifa_list); |
| 334 | return ret; |
| 335 | } |
| 336 | |
| 337 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
| 338 | unsigned long data, void *arg) |
| 339 | { |
| 340 | struct in_ifaddr *ifa = arg; |
| 341 | struct ieee80211_local *local = |
| 342 | container_of(nb, struct ieee80211_local, |
| 343 | ifa_notifier); |
| 344 | struct net_device *ndev = ifa->ifa_dev->dev; |
| 345 | struct wireless_dev *wdev = ndev->ieee80211_ptr; |
| 346 | struct ieee80211_sub_if_data *sdata; |
| 347 | struct ieee80211_if_managed *ifmgd; |
| 348 | |
Juuso Oikarinen | 90b7260 | 2010-06-07 10:52:12 +0300 | [diff] [blame] | 349 | if (!netif_running(ndev)) |
| 350 | return NOTIFY_DONE; |
| 351 | |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 352 | /* Make sure it's our interface that got changed */ |
| 353 | if (!wdev) |
| 354 | return NOTIFY_DONE; |
| 355 | |
| 356 | if (wdev->wiphy != local->hw.wiphy) |
| 357 | return NOTIFY_DONE; |
| 358 | |
| 359 | /* We are concerned about IP addresses only when associated */ |
| 360 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
| 361 | |
| 362 | /* ARP filtering is only supported in managed mode */ |
| 363 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| 364 | return NOTIFY_DONE; |
| 365 | |
| 366 | ifmgd = &sdata->u.mgd; |
| 367 | mutex_lock(&ifmgd->mtx); |
| 368 | if (ifmgd->associated) |
| 369 | ieee80211_set_arp_filter(sdata); |
| 370 | mutex_unlock(&ifmgd->mtx); |
| 371 | |
| 372 | return NOTIFY_DONE; |
| 373 | } |
John W. Linville | 26b36cf | 2010-06-04 14:25:44 -0400 | [diff] [blame] | 374 | #endif |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 375 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 376 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 377 | const struct ieee80211_ops *ops) |
| 378 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 379 | struct ieee80211_local *local; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 380 | int priv_size, i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 381 | struct wiphy *wiphy; |
| 382 | |
| 383 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 384 | * We use the wiphy priv data for both our ieee80211_local and for |
| 385 | * the driver's private data |
| 386 | * |
| 387 | * In memory it'll be like this: |
| 388 | * |
| 389 | * +-------------------------+ |
| 390 | * | struct wiphy | |
| 391 | * +-------------------------+ |
| 392 | * | struct ieee80211_local | |
| 393 | * +-------------------------+ |
| 394 | * | driver's private data | |
| 395 | * +-------------------------+ |
| 396 | * |
| 397 | */ |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 398 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 399 | |
| 400 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); |
| 401 | |
| 402 | if (!wiphy) |
| 403 | return NULL; |
| 404 | |
Johannes Berg | 9bc383d | 2009-11-19 11:55:19 +0100 | [diff] [blame] | 405 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
| 406 | WIPHY_FLAG_4ADDR_AP | |
| 407 | WIPHY_FLAG_4ADDR_STATION; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 408 | wiphy->privid = mac80211_wiphy_privid; |
Johannes Berg | 18a8365 | 2009-03-31 12:12:05 +0200 | [diff] [blame] | 409 | |
Johannes Berg | 0c1ad2c | 2009-12-23 13:15:39 +0100 | [diff] [blame] | 410 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 411 | |
| 412 | local = wiphy_priv(wiphy); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 413 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 414 | local->hw.wiphy = wiphy; |
| 415 | |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 416 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 417 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 418 | BUG_ON(!ops->tx); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 419 | BUG_ON(!ops->start); |
| 420 | BUG_ON(!ops->stop); |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 421 | BUG_ON(!ops->config); |
| 422 | BUG_ON(!ops->add_interface); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 423 | BUG_ON(!ops->remove_interface); |
| 424 | BUG_ON(!ops->configure_filter); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 425 | local->ops = ops; |
| 426 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 427 | /* set up some defaults */ |
| 428 | local->hw.queues = 1; |
| 429 | local->hw.max_rates = 1; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 430 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
| 431 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; |
Johannes Berg | c428c89 | 2009-04-29 00:28:18 +0200 | [diff] [blame] | 432 | local->user_power_level = -1; |
Kalle Valo | 50ae0cf | 2010-01-12 10:42:39 +0200 | [diff] [blame] | 433 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
| 434 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 435 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 436 | INIT_LIST_HEAD(&local->interfaces); |
YOSHIFUJI Hideaki / 吉藤英明 | 2f787b0 | 2010-04-04 17:59:30 +0000 | [diff] [blame] | 437 | |
| 438 | __hw_addr_init(&local->mc_list); |
| 439 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 440 | mutex_init(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 441 | mutex_init(&local->scan_mtx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 442 | |
Johannes Berg | ad0e2b5 | 2010-06-01 10:19:19 +0200 | [diff] [blame] | 443 | mutex_init(&local->key_mtx); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 444 | spin_lock_init(&local->filter_lock); |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 445 | spin_lock_init(&local->queue_stop_reason_lock); |
| 446 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 447 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 448 | |
Johannes Berg | af6b637 | 2009-12-23 13:15:35 +0100 | [diff] [blame] | 449 | ieee80211_work_init(local); |
| 450 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 451 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
| 452 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 453 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 454 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
| 455 | local->smps_mode = IEEE80211_SMPS_OFF; |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 456 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 457 | INIT_WORK(&local->dynamic_ps_enable_work, |
| 458 | ieee80211_dynamic_ps_enable_work); |
| 459 | INIT_WORK(&local->dynamic_ps_disable_work, |
| 460 | ieee80211_dynamic_ps_disable_work); |
| 461 | setup_timer(&local->dynamic_ps_timer, |
| 462 | ieee80211_dynamic_ps_timer, (unsigned long) local); |
| 463 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 464 | sta_info_init(local); |
| 465 | |
Johannes Berg | a6a67db | 2010-06-10 10:21:41 +0200 | [diff] [blame^] | 466 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 467 | skb_queue_head_init(&local->pending[i]); |
Johannes Berg | a6a67db | 2010-06-10 10:21:41 +0200 | [diff] [blame^] | 468 | atomic_set(&local->agg_queue_stop[i], 0); |
| 469 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 470 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 471 | (unsigned long)local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 472 | |
| 473 | tasklet_init(&local->tasklet, |
| 474 | ieee80211_tasklet_handler, |
| 475 | (unsigned long) local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 476 | |
| 477 | skb_queue_head_init(&local->skb_queue); |
| 478 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 479 | |
| 480 | return local_to_hw(local); |
| 481 | } |
| 482 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 483 | |
| 484 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 485 | { |
| 486 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 487 | int result; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 488 | enum ieee80211_band band; |
Johannes Berg | be4a4b6 | 2010-05-03 08:49:48 +0200 | [diff] [blame] | 489 | int channels, max_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 490 | bool supp_ht; |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 491 | static const u32 cipher_suites[] = { |
| 492 | WLAN_CIPHER_SUITE_WEP40, |
| 493 | WLAN_CIPHER_SUITE_WEP104, |
| 494 | WLAN_CIPHER_SUITE_TKIP, |
| 495 | WLAN_CIPHER_SUITE_CCMP, |
| 496 | |
| 497 | /* keep last -- depends on hw flags! */ |
| 498 | WLAN_CIPHER_SUITE_AES_CMAC |
| 499 | }; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 500 | |
| 501 | /* |
| 502 | * generic code guarantees at least one band, |
| 503 | * set this very early because much code assumes |
| 504 | * that hw.conf.channel is assigned |
| 505 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 506 | channels = 0; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 507 | max_bitrates = 0; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 508 | supp_ht = false; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 509 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 510 | struct ieee80211_supported_band *sband; |
| 511 | |
| 512 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 513 | if (!sband) |
| 514 | continue; |
| 515 | if (!local->oper_channel) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 516 | /* init channel we're on */ |
| 517 | local->hw.conf.channel = |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 518 | local->oper_channel = &sband->channels[0]; |
| 519 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 520 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 521 | channels += sband->n_channels; |
| 522 | |
| 523 | if (max_bitrates < sband->n_bitrates) |
| 524 | max_bitrates = sband->n_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 525 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 526 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 527 | |
Johannes Berg | 5ba6353 | 2009-08-07 17:54:07 +0200 | [diff] [blame] | 528 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
| 529 | sizeof(void *) * channels, GFP_KERNEL); |
| 530 | if (!local->int_scan_req) |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 531 | return -ENOMEM; |
| 532 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 533 | /* if low-level driver supports AP, we also support VLAN */ |
| 534 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) |
| 535 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| 536 | |
| 537 | /* mac80211 always supports monitor */ |
| 538 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| 539 | |
Johannes Berg | 77965c9 | 2009-02-18 18:45:06 +0100 | [diff] [blame] | 540 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
| 541 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
| 542 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) |
| 543 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
| 544 | |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 545 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
| 546 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), |
| 547 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); |
| 548 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 549 | /* |
| 550 | * Calculate scan IE length -- we need this to alloc |
| 551 | * memory and to subtract from the driver limit. It |
| 552 | * includes the (extended) supported rates and HT |
| 553 | * information -- SSID is the driver's responsibility. |
| 554 | */ |
| 555 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 556 | if (supp_ht) |
| 557 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 558 | |
| 559 | if (!local->ops->hw_scan) { |
| 560 | /* For hw_scan, driver needs to set these up. */ |
| 561 | local->hw.wiphy->max_scan_ssids = 4; |
| 562 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; |
| 563 | } |
| 564 | |
| 565 | /* |
| 566 | * If the driver supports any scan IEs, then assume the |
| 567 | * limit includes the IEs mac80211 will add, otherwise |
| 568 | * leave it at zero and let the driver sort it out; we |
| 569 | * still pass our IEs to the driver but userspace will |
| 570 | * not be allowed to in that case. |
| 571 | */ |
| 572 | if (local->hw.wiphy->max_scan_ie_len) |
| 573 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; |
| 574 | |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 575 | local->hw.wiphy->cipher_suites = cipher_suites; |
| 576 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); |
| 577 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) |
| 578 | local->hw.wiphy->n_cipher_suites--; |
| 579 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 580 | result = wiphy_register(local->hw.wiphy); |
| 581 | if (result < 0) |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 582 | goto fail_wiphy_register; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 583 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 584 | /* |
| 585 | * We use the number of queues for feature tests (QoS, HT) internally |
| 586 | * so restrict them appropriately. |
| 587 | */ |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 588 | if (hw->queues > IEEE80211_MAX_QUEUES) |
| 589 | hw->queues = IEEE80211_MAX_QUEUES; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 590 | |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 591 | local->workqueue = |
Bob Copeland | 30d3ef4 | 2009-01-23 23:09:35 -0500 | [diff] [blame] | 592 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 593 | if (!local->workqueue) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 594 | result = -ENOMEM; |
| 595 | goto fail_workqueue; |
| 596 | } |
| 597 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 598 | /* |
| 599 | * The hardware needs headroom for sending the frame, |
| 600 | * and we need some headroom for passing the frame to monitor |
| 601 | * interfaces, but never both at the same time. |
| 602 | */ |
Gertjan van Wingerde | d24deb2 | 2009-12-04 23:46:54 +0100 | [diff] [blame] | 603 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
| 604 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 605 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 606 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 607 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 608 | debugfs_hw_add(local); |
| 609 | |
Helmut Schaa | b446918 | 2010-02-24 14:19:37 +0100 | [diff] [blame] | 610 | /* |
| 611 | * if the driver doesn't specify a max listen interval we |
| 612 | * use 5 which should be a safe default |
| 613 | */ |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 614 | if (local->hw.max_listen_interval == 0) |
Helmut Schaa | b446918 | 2010-02-24 14:19:37 +0100 | [diff] [blame] | 615 | local->hw.max_listen_interval = 5; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 616 | |
| 617 | local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| 618 | |
Juuso Oikarinen | 195e294 | 2010-04-27 12:47:40 +0300 | [diff] [blame] | 619 | local->hw.conf.dynamic_ps_forced_timeout = -1; |
| 620 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 621 | result = sta_info_start(local); |
| 622 | if (result < 0) |
| 623 | goto fail_sta_info; |
| 624 | |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 625 | result = ieee80211_wep_init(local); |
| 626 | if (result < 0) { |
| 627 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
| 628 | wiphy_name(local->hw.wiphy), result); |
| 629 | goto fail_wep; |
| 630 | } |
| 631 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 632 | rtnl_lock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 633 | |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 634 | result = ieee80211_init_rate_ctrl_alg(local, |
| 635 | hw->rate_control_algorithm); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 636 | if (result < 0) { |
| 637 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 638 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 639 | goto fail_rate; |
| 640 | } |
| 641 | |
Johannes Berg | 8dffff2 | 2008-12-09 00:10:30 +0100 | [diff] [blame] | 642 | /* add one default STA interface if supported */ |
| 643 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { |
| 644 | result = ieee80211_if_add(local, "wlan%d", NULL, |
| 645 | NL80211_IFTYPE_STATION, NULL); |
| 646 | if (result) |
| 647 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
| 648 | wiphy_name(local->hw.wiphy)); |
| 649 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 650 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 651 | rtnl_unlock(); |
| 652 | |
| 653 | ieee80211_led_init(local); |
| 654 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 655 | local->network_latency_notifier.notifier_call = |
| 656 | ieee80211_max_network_latency; |
| 657 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, |
| 658 | &local->network_latency_notifier); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 659 | if (result) { |
| 660 | rtnl_lock(); |
| 661 | goto fail_pm_qos; |
| 662 | } |
| 663 | |
John W. Linville | 26b36cf | 2010-06-04 14:25:44 -0400 | [diff] [blame] | 664 | #ifdef CONFIG_INET |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 665 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
| 666 | result = register_inetaddr_notifier(&local->ifa_notifier); |
| 667 | if (result) |
| 668 | goto fail_ifa; |
John W. Linville | 26b36cf | 2010-06-04 14:25:44 -0400 | [diff] [blame] | 669 | #endif |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 670 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 671 | return 0; |
| 672 | |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 673 | fail_ifa: |
| 674 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
| 675 | &local->network_latency_notifier); |
| 676 | rtnl_lock(); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 677 | fail_pm_qos: |
| 678 | ieee80211_led_exit(local); |
| 679 | ieee80211_remove_interfaces(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 680 | fail_rate: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 681 | rtnl_unlock(); |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 682 | ieee80211_wep_free(local); |
David S. Miller | aba7453 | 2009-04-29 20:30:35 -0700 | [diff] [blame] | 683 | fail_wep: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 684 | sta_info_stop(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 685 | fail_sta_info: |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 686 | destroy_workqueue(local->workqueue); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 687 | fail_workqueue: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 688 | wiphy_unregister(local->hw.wiphy); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 689 | fail_wiphy_register: |
Johannes Berg | 11ba964 | 2009-08-19 19:45:50 +0200 | [diff] [blame] | 690 | kfree(local->int_scan_req); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 691 | return result; |
| 692 | } |
| 693 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 694 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 695 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 696 | { |
| 697 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 698 | |
| 699 | tasklet_kill(&local->tx_pending_tasklet); |
| 700 | tasklet_kill(&local->tasklet); |
| 701 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 702 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
| 703 | &local->network_latency_notifier); |
John W. Linville | 26b36cf | 2010-06-04 14:25:44 -0400 | [diff] [blame] | 704 | #ifdef CONFIG_INET |
Juuso Oikarinen | 2b2c009 | 2010-05-27 15:32:13 +0300 | [diff] [blame] | 705 | unregister_inetaddr_notifier(&local->ifa_notifier); |
John W. Linville | 26b36cf | 2010-06-04 14:25:44 -0400 | [diff] [blame] | 706 | #endif |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 707 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 708 | rtnl_lock(); |
| 709 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 710 | /* |
| 711 | * At this point, interface list manipulations are fine |
| 712 | * because the driver cannot be handing us frames any |
| 713 | * more and the tasklet is killed. |
| 714 | */ |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 715 | ieee80211_remove_interfaces(local); |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 716 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 717 | rtnl_unlock(); |
| 718 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 719 | cancel_work_sync(&local->reconfig_filter); |
| 720 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 721 | ieee80211_clear_tx_pending(local); |
| 722 | sta_info_stop(local); |
| 723 | rate_control_deinitialize(local); |
| 724 | |
Joe Perches | f64f9e7 | 2009-11-29 16:55:45 -0800 | [diff] [blame] | 725 | if (skb_queue_len(&local->skb_queue) || |
| 726 | skb_queue_len(&local->skb_queue_unreliable)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 727 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 728 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 729 | skb_queue_purge(&local->skb_queue); |
| 730 | skb_queue_purge(&local->skb_queue_unreliable); |
| 731 | |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 732 | destroy_workqueue(local->workqueue); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 733 | wiphy_unregister(local->hw.wiphy); |
| 734 | ieee80211_wep_free(local); |
| 735 | ieee80211_led_exit(local); |
Johannes Berg | 5ba6353 | 2009-08-07 17:54:07 +0200 | [diff] [blame] | 736 | kfree(local->int_scan_req); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 737 | } |
| 738 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 739 | |
| 740 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 741 | { |
| 742 | struct ieee80211_local *local = hw_to_local(hw); |
| 743 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 744 | mutex_destroy(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 745 | mutex_destroy(&local->scan_mtx); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 746 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 747 | wiphy_free(local->hw.wiphy); |
| 748 | } |
| 749 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 750 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 751 | static int __init ieee80211_init(void) |
| 752 | { |
| 753 | struct sk_buff *skb; |
| 754 | int ret; |
| 755 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 756 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| 757 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
Johannes Berg | c6a1fa1 | 2008-10-07 12:04:32 +0200 | [diff] [blame] | 758 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 759 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 760 | ret = rc80211_minstrel_init(); |
| 761 | if (ret) |
| 762 | return ret; |
| 763 | |
Felix Fietkau | ec8aa66 | 2010-05-13 16:48:03 +0200 | [diff] [blame] | 764 | ret = rc80211_minstrel_ht_init(); |
| 765 | if (ret) |
| 766 | goto err_minstrel; |
| 767 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 768 | ret = rc80211_pid_init(); |
Mattias Nissler | ad01837 | 2007-12-19 01:25:57 +0100 | [diff] [blame] | 769 | if (ret) |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 770 | goto err_pid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 771 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 772 | ret = ieee80211_iface_init(); |
| 773 | if (ret) |
| 774 | goto err_netdev; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 775 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 776 | return 0; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 777 | err_netdev: |
| 778 | rc80211_pid_exit(); |
| 779 | err_pid: |
Felix Fietkau | ec8aa66 | 2010-05-13 16:48:03 +0200 | [diff] [blame] | 780 | rc80211_minstrel_ht_exit(); |
| 781 | err_minstrel: |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 782 | rc80211_minstrel_exit(); |
| 783 | |
| 784 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 785 | } |
| 786 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 787 | static void __exit ieee80211_exit(void) |
| 788 | { |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 789 | rc80211_pid_exit(); |
Felix Fietkau | ec8aa66 | 2010-05-13 16:48:03 +0200 | [diff] [blame] | 790 | rc80211_minstrel_ht_exit(); |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 791 | rc80211_minstrel_exit(); |
Johannes Berg | ac71c69 | 2007-10-28 14:17:44 +0100 | [diff] [blame] | 792 | |
Johannes Berg | 3b96766 | 2008-04-08 17:56:52 +0200 | [diff] [blame] | 793 | /* |
| 794 | * For key todo, it'll be empty by now but the work |
| 795 | * might still be scheduled. |
| 796 | */ |
| 797 | flush_scheduled_work(); |
| 798 | |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 799 | if (mesh_allocated) |
| 800 | ieee80211s_stop(); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 801 | |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 802 | ieee80211_iface_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 806 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 807 | module_exit(ieee80211_exit); |
| 808 | |
| 809 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 810 | MODULE_LICENSE("GPL"); |