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> |
| 12 | #include <net/ieee80211_radiotap.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/netdevice.h> |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/skbuff.h> |
| 19 | #include <linux/etherdevice.h> |
| 20 | #include <linux/if_arp.h> |
| 21 | #include <linux/wireless.h> |
| 22 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 23 | #include <linux/bitmap.h> |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 24 | #include <linux/pm_qos_params.h> |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 25 | #include <net/net_namespace.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 26 | #include <net/cfg80211.h> |
| 27 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 28 | #include "ieee80211_i.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 29 | #include "driver-ops.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 30 | #include "rate.h" |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 31 | #include "mesh.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 32 | #include "wep.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 33 | #include "wme.h" |
| 34 | #include "aes_ccm.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 35 | #include "led.h" |
Michael Wu | e0eb685 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 36 | #include "cfg.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 37 | #include "debugfs.h" |
| 38 | #include "debugfs_netdev.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 39 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 40 | /* |
| 41 | * For seeing transmitted packets on monitor interfaces |
| 42 | * we have a radiotap header too. |
| 43 | */ |
| 44 | struct ieee80211_tx_status_rtap_hdr { |
| 45 | struct ieee80211_radiotap_header hdr; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 46 | u8 rate; |
| 47 | u8 padding_for_rate; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 48 | __le16 tx_flags; |
| 49 | u8 data_retries; |
| 50 | } __attribute__ ((packed)); |
| 51 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 52 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 53 | /* must be called under mdev tx lock */ |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 54 | void ieee80211_configure_filter(struct ieee80211_local *local) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 55 | { |
| 56 | unsigned int changed_flags; |
| 57 | unsigned int new_flags = 0; |
| 58 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 59 | if (atomic_read(&local->iff_promiscs)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 60 | new_flags |= FIF_PROMISC_IN_BSS; |
| 61 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 62 | if (atomic_read(&local->iff_allmultis)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 63 | new_flags |= FIF_ALLMULTI; |
| 64 | |
| 65 | if (local->monitors) |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 66 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
| 67 | |
| 68 | if (local->fif_fcsfail) |
| 69 | new_flags |= FIF_FCSFAIL; |
| 70 | |
| 71 | if (local->fif_plcpfail) |
| 72 | new_flags |= FIF_PLCPFAIL; |
| 73 | |
| 74 | if (local->fif_control) |
| 75 | new_flags |= FIF_CONTROL; |
| 76 | |
| 77 | if (local->fif_other_bss) |
| 78 | new_flags |= FIF_OTHER_BSS; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 79 | |
| 80 | changed_flags = local->filter_flags ^ new_flags; |
| 81 | |
| 82 | /* be a bit nasty */ |
| 83 | new_flags |= (1<<31); |
| 84 | |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 85 | drv_configure_filter(local, changed_flags, &new_flags, |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 86 | local->mc_count, |
| 87 | local->mc_list); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 88 | |
| 89 | WARN_ON(new_flags & (1<<31)); |
| 90 | |
| 91 | local->filter_flags = new_flags & ~(1<<31); |
| 92 | } |
| 93 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 94 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 95 | { |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 96 | struct ieee80211_channel *chan, *scan_chan; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 97 | int ret = 0; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 98 | int power; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 99 | enum nl80211_channel_type channel_type; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 100 | |
Johannes Berg | cb121ba | 2008-10-14 16:38:55 +0200 | [diff] [blame] | 101 | might_sleep(); |
| 102 | |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 103 | scan_chan = local->scan_channel; |
| 104 | |
| 105 | if (scan_chan) { |
| 106 | chan = scan_chan; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 107 | channel_type = NL80211_CHAN_NO_HT; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 108 | } else { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 109 | chan = local->oper_channel; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 110 | channel_type = local->oper_channel_type; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 111 | } |
| 112 | |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 113 | if (chan != local->hw.conf.channel || |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 114 | channel_type != local->hw.conf.channel_type) { |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 115 | local->hw.conf.channel = chan; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 116 | local->hw.conf.channel_type = channel_type; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 117 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
| 118 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 119 | |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 120 | if (scan_chan) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 121 | power = chan->max_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 122 | else |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 123 | power = local->power_constr_level ? |
| 124 | (chan->max_power - local->power_constr_level) : |
| 125 | chan->max_power; |
| 126 | |
Johannes Berg | 47afbaf | 2009-04-07 15:22:28 +0200 | [diff] [blame] | 127 | if (local->user_power_level >= 0) |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 128 | power = min(power, local->user_power_level); |
| 129 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 130 | if (local->hw.conf.power_level != power) { |
| 131 | changed |= IEEE80211_CONF_CHANGE_POWER; |
| 132 | local->hw.conf.power_level = power; |
| 133 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 134 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 135 | if (changed && local->open_count) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 136 | ret = drv_config(local, changed); |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 137 | /* |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 138 | * Goal: |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 139 | * HW reconfiguration should never fail, the driver has told |
| 140 | * 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] | 141 | * |
| 142 | * Current status: |
| 143 | * rfkill is not integrated with mac80211 and a |
| 144 | * configuration command can thus fail if hardware rfkill |
| 145 | * is enabled |
| 146 | * |
| 147 | * FIXME: integrate rfkill with mac80211 and then add this |
| 148 | * WARN_ON() back |
| 149 | * |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 150 | */ |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 151 | /* WARN_ON(ret); */ |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 152 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 153 | |
| 154 | return ret; |
| 155 | } |
| 156 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 157 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| 158 | u32 changed) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 159 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 160 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 9cef873 | 2009-05-14 13:10:14 +0200 | [diff] [blame] | 161 | static const u8 zero[ETH_ALEN] = { 0 }; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 162 | |
| 163 | if (!changed) |
| 164 | return; |
| 165 | |
Johannes Berg | 9cef873 | 2009-05-14 13:10:14 +0200 | [diff] [blame] | 166 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
| 167 | /* |
| 168 | * While not associated, claim a BSSID of all-zeroes |
| 169 | * so that drivers don't do any weird things with the |
| 170 | * BSSID at that time. |
| 171 | */ |
| 172 | if (sdata->vif.bss_conf.assoc) |
| 173 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
| 174 | else |
| 175 | sdata->vif.bss_conf.bssid = zero; |
| 176 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 177 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
| 178 | else if (sdata->vif.type == NL80211_IFTYPE_AP) |
| 179 | sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; |
| 180 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 181 | sdata->vif.bss_conf.bssid = zero; |
| 182 | } else { |
| 183 | WARN_ON(1); |
| 184 | return; |
| 185 | } |
| 186 | |
| 187 | switch (sdata->vif.type) { |
| 188 | case NL80211_IFTYPE_AP: |
| 189 | case NL80211_IFTYPE_ADHOC: |
| 190 | case NL80211_IFTYPE_MESH_POINT: |
| 191 | break; |
| 192 | default: |
| 193 | /* do not warn to simplify caller in scan.c */ |
| 194 | changed &= ~BSS_CHANGED_BEACON_ENABLED; |
| 195 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) |
| 196 | return; |
| 197 | break; |
| 198 | } |
| 199 | |
| 200 | if (changed & BSS_CHANGED_BEACON_ENABLED) { |
| 201 | if (local->sw_scanning) { |
| 202 | sdata->vif.bss_conf.enable_beacon = false; |
| 203 | } else { |
| 204 | /* |
| 205 | * Beacon should be enabled, but AP mode must |
| 206 | * check whether there is a beacon configured. |
| 207 | */ |
| 208 | switch (sdata->vif.type) { |
| 209 | case NL80211_IFTYPE_AP: |
| 210 | sdata->vif.bss_conf.enable_beacon = |
| 211 | !!rcu_dereference(sdata->u.ap.beacon); |
| 212 | break; |
| 213 | case NL80211_IFTYPE_ADHOC: |
| 214 | sdata->vif.bss_conf.enable_beacon = |
| 215 | !!rcu_dereference(sdata->u.ibss.presp); |
| 216 | break; |
| 217 | case NL80211_IFTYPE_MESH_POINT: |
| 218 | sdata->vif.bss_conf.enable_beacon = true; |
| 219 | break; |
| 220 | default: |
| 221 | /* not reached */ |
| 222 | WARN_ON(1); |
| 223 | break; |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 228 | drv_bss_info_changed(local, &sdata->vif, |
| 229 | &sdata->vif.bss_conf, changed); |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 230 | |
Johannes Berg | e535c75 | 2009-05-23 11:18:45 +0200 | [diff] [blame] | 231 | /* DEPRECATED */ |
| 232 | local->hw.conf.beacon_int = sdata->vif.bss_conf.beacon_int; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 233 | } |
| 234 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 235 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 236 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 237 | sdata->vif.bss_conf.use_cts_prot = false; |
| 238 | sdata->vif.bss_conf.use_short_preamble = false; |
| 239 | sdata->vif.bss_conf.use_short_slot = false; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 240 | return BSS_CHANGED_ERP_CTS_PROT | |
| 241 | BSS_CHANGED_ERP_PREAMBLE | |
| 242 | BSS_CHANGED_ERP_SLOT; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 243 | } |
| 244 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 245 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 246 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 247 | { |
| 248 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 249 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 250 | int tmp; |
| 251 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 252 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 253 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 254 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
| 255 | tmp = skb_queue_len(&local->skb_queue) + |
| 256 | skb_queue_len(&local->skb_queue_unreliable); |
| 257 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| 258 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 259 | dev_kfree_skb_irq(skb); |
| 260 | tmp--; |
| 261 | I802_DEBUG_INC(local->tx_status_drop); |
| 262 | } |
| 263 | tasklet_schedule(&local->tasklet); |
| 264 | } |
| 265 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| 266 | |
| 267 | static void ieee80211_tasklet_handler(unsigned long data) |
| 268 | { |
| 269 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 270 | struct sk_buff *skb; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 271 | struct ieee80211_ra_tid *ra_tid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 272 | |
| 273 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 274 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 275 | switch (skb->pkt_type) { |
| 276 | case IEEE80211_RX_MSG: |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 277 | /* Clear skb->pkt_type in order to not confuse kernel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 278 | * netstack. */ |
| 279 | skb->pkt_type = 0; |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 280 | ieee80211_rx(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 281 | break; |
| 282 | case IEEE80211_TX_STATUS_MSG: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 283 | skb->pkt_type = 0; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 284 | ieee80211_tx_status(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 285 | break; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 286 | case IEEE80211_DELBA_MSG: |
| 287 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 288 | ieee80211_stop_tx_ba_cb(local_to_hw(local), |
| 289 | ra_tid->ra, ra_tid->tid); |
| 290 | dev_kfree_skb(skb); |
| 291 | break; |
| 292 | case IEEE80211_ADDBA_MSG: |
| 293 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 294 | ieee80211_start_tx_ba_cb(local_to_hw(local), |
| 295 | ra_tid->ra, ra_tid->tid); |
| 296 | dev_kfree_skb(skb); |
| 297 | break ; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 298 | default: |
Larry Finger | 5e3f308 | 2008-12-17 14:26:59 -0600 | [diff] [blame] | 299 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
| 300 | skb->pkt_type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 301 | dev_kfree_skb(skb); |
| 302 | break; |
| 303 | } |
| 304 | } |
| 305 | } |
| 306 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 307 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
| 308 | struct sta_info *sta, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 309 | struct sk_buff *skb) |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 310 | { |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 311 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 312 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 313 | sta->tx_filtered_count++; |
| 314 | |
| 315 | /* |
| 316 | * Clear the TX filter mask for this STA when sending the next |
| 317 | * packet. If the STA went to power save mode, this will happen |
Yi Zhu | f6d9710 | 2008-05-27 17:50:50 +0300 | [diff] [blame] | 318 | * when it wakes up for the next time. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 319 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 320 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 321 | |
| 322 | /* |
| 323 | * This code races in the following way: |
| 324 | * |
| 325 | * (1) STA sends frame indicating it will go to sleep and does so |
| 326 | * (2) hardware/firmware adds STA to filter list, passes frame up |
| 327 | * (3) hardware/firmware processes TX fifo and suppresses a frame |
| 328 | * (4) we get TX status before having processed the frame and |
| 329 | * knowing that the STA has gone to sleep. |
| 330 | * |
| 331 | * This is actually quite unlikely even when both those events are |
| 332 | * processed from interrupts coming in quickly after one another or |
| 333 | * even at the same time because we queue both TX status events and |
| 334 | * RX frames to be processed by a tasklet and process them in the |
| 335 | * same order that they were received or TX status last. Hence, there |
| 336 | * is no race as long as the frame RX is processed before the next TX |
| 337 | * status, which drivers can ensure, see below. |
| 338 | * |
| 339 | * Note that this can only happen if the hardware or firmware can |
| 340 | * actually add STAs to the filter list, if this is done by the |
| 341 | * driver in response to set_tim() (which will only reduce the race |
| 342 | * this whole filtering tries to solve, not completely solve it) |
| 343 | * this situation cannot happen. |
| 344 | * |
| 345 | * To completely solve this race drivers need to make sure that they |
| 346 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
| 347 | * functions and |
| 348 | * (b) always process RX events before TX status events if ordering |
| 349 | * can be unknown, for example with different interrupt status |
| 350 | * bits. |
| 351 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 352 | if (test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 353 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 354 | skb_queue_tail(&sta->tx_filtered, skb); |
| 355 | return; |
| 356 | } |
| 357 | |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 358 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
| 359 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 360 | /* Software retry the packet once */ |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 361 | info->flags |= IEEE80211_TX_INTFL_RETRIED; |
| 362 | ieee80211_add_pending_skb(local, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 363 | return; |
| 364 | } |
| 365 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 366 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 367 | if (net_ratelimit()) |
| 368 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " |
| 369 | "queue_len=%d PS=%d @%lu\n", |
| 370 | wiphy_name(local->hw.wiphy), |
| 371 | skb_queue_len(&sta->tx_filtered), |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 372 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 373 | #endif |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 374 | dev_kfree_skb(skb); |
| 375 | } |
| 376 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 377 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 378 | { |
| 379 | struct sk_buff *skb2; |
| 380 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 381 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 382 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 383 | u16 frag, type; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 384 | __le16 fc; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 385 | struct ieee80211_supported_band *sband; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 386 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
| 387 | struct ieee80211_sub_if_data *sdata; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 388 | struct net_device *prev_dev = NULL; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 389 | struct sta_info *sta; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 390 | int retry_count = -1, i; |
| 391 | |
| 392 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { |
| 393 | /* the HW cannot have attempted that rate */ |
| 394 | if (i >= hw->max_rates) { |
| 395 | info->status.rates[i].idx = -1; |
| 396 | info->status.rates[i].count = 0; |
| 397 | } |
| 398 | |
| 399 | retry_count += info->status.rates[i].count; |
| 400 | } |
| 401 | if (retry_count < 0) |
| 402 | retry_count = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 403 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 404 | rcu_read_lock(); |
| 405 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 406 | sband = local->hw.wiphy->bands[info->band]; |
| 407 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 408 | sta = sta_info_get(local, hdr->addr1); |
| 409 | |
| 410 | if (sta) { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 411 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 412 | test_sta_flags(sta, WLAN_STA_PS)) { |
| 413 | /* |
| 414 | * The STA is in power save mode, so assume |
| 415 | * that this TX packet failed because of that. |
| 416 | */ |
| 417 | ieee80211_handle_filtered_frame(local, sta, skb); |
| 418 | rcu_read_unlock(); |
| 419 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 420 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 421 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 422 | fc = hdr->frame_control; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 423 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 424 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
| 425 | (ieee80211_is_data_qos(fc))) { |
| 426 | u16 tid, ssn; |
| 427 | u8 *qc; |
| 428 | |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 429 | qc = ieee80211_get_qos_ctl(hdr); |
| 430 | tid = qc[0] & 0xf; |
| 431 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
| 432 | & IEEE80211_SCTL_SEQ); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 433 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 434 | tid, ssn); |
| 435 | } |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 436 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 437 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 438 | ieee80211_handle_filtered_frame(local, sta, skb); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 439 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 440 | return; |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 441 | } else { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 442 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 443 | sta->tx_retry_failed++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 444 | sta->tx_retry_count += retry_count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 445 | } |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 446 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 447 | rate_control_tx_status(local, sband, sta, skb); |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 448 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 449 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 450 | rcu_read_unlock(); |
| 451 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 452 | ieee80211_led_tx(local, 0); |
| 453 | |
| 454 | /* SNMP counters |
| 455 | * Fragments are passed to low-level drivers as separate skbs, so these |
| 456 | * are actually fragments, not frames. Update frame counters only for |
| 457 | * the first fragment of the frame. */ |
| 458 | |
| 459 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
| 460 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; |
| 461 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 462 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 463 | if (frag == 0) { |
| 464 | local->dot11TransmittedFrameCount++; |
| 465 | if (is_multicast_ether_addr(hdr->addr1)) |
| 466 | local->dot11MulticastTransmittedFrameCount++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 467 | if (retry_count > 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 468 | local->dot11RetryCount++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 469 | if (retry_count > 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 470 | local->dot11MultipleRetryCount++; |
| 471 | } |
| 472 | |
| 473 | /* This counter shall be incremented for an acknowledged MPDU |
| 474 | * with an individual address in the address 1 field or an MPDU |
| 475 | * with a multicast address in the address 1 field of type Data |
| 476 | * or Management. */ |
| 477 | if (!is_multicast_ether_addr(hdr->addr1) || |
| 478 | type == IEEE80211_FTYPE_DATA || |
| 479 | type == IEEE80211_FTYPE_MGMT) |
| 480 | local->dot11TransmittedFragmentCount++; |
| 481 | } else { |
| 482 | if (frag == 0) |
| 483 | local->dot11FailedCount++; |
| 484 | } |
| 485 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 486 | /* this was a transmitted frame, but now we want to reuse it */ |
| 487 | skb_orphan(skb); |
| 488 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 489 | /* |
| 490 | * This is a bit racy but we can avoid a lot of work |
| 491 | * with this test... |
| 492 | */ |
| 493 | if (!local->monitors && !local->cooked_mntrs) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 494 | dev_kfree_skb(skb); |
| 495 | return; |
| 496 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 497 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 498 | /* send frame to monitor interfaces now */ |
| 499 | |
| 500 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
| 501 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); |
| 502 | dev_kfree_skb(skb); |
| 503 | return; |
| 504 | } |
| 505 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 506 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 507 | skb_push(skb, sizeof(*rthdr)); |
| 508 | |
| 509 | memset(rthdr, 0, sizeof(*rthdr)); |
| 510 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); |
| 511 | rthdr->hdr.it_present = |
| 512 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 513 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
| 514 | (1 << IEEE80211_RADIOTAP_RATE)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 515 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 516 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 517 | !is_multicast_ether_addr(hdr->addr1)) |
| 518 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); |
| 519 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 520 | /* |
| 521 | * XXX: Once radiotap gets the bitmap reset thing the vendor |
| 522 | * extensions proposal contains, we can actually report |
| 523 | * the whole set of tries we did. |
| 524 | */ |
| 525 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || |
| 526 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 527 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 528 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 529 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 530 | if (info->status.rates[0].idx >= 0 && |
| 531 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) |
| 532 | rthdr->rate = sband->bitrates[ |
| 533 | info->status.rates[0].idx].bitrate / 5; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 534 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 535 | /* for now report the total retry_count */ |
| 536 | rthdr->data_retries = retry_count; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 537 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 538 | /* XXX: is this sufficient for BPF? */ |
| 539 | skb_set_mac_header(skb, 0); |
| 540 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 541 | skb->pkt_type = PACKET_OTHERHOST; |
| 542 | skb->protocol = htons(ETH_P_802_2); |
| 543 | memset(skb->cb, 0, sizeof(skb->cb)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 544 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 545 | rcu_read_lock(); |
| 546 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 547 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 548 | if (!netif_running(sdata->dev)) |
| 549 | continue; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 550 | |
| 551 | if (prev_dev) { |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 552 | skb2 = skb_clone(skb, GFP_ATOMIC); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 553 | if (skb2) { |
| 554 | skb2->dev = prev_dev; |
| 555 | netif_rx(skb2); |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | prev_dev = sdata->dev; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 560 | } |
| 561 | } |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 562 | if (prev_dev) { |
| 563 | skb->dev = prev_dev; |
| 564 | netif_rx(skb); |
| 565 | skb = NULL; |
| 566 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 567 | rcu_read_unlock(); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 568 | dev_kfree_skb(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 569 | } |
| 570 | EXPORT_SYMBOL(ieee80211_tx_status); |
| 571 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 572 | static void ieee80211_restart_work(struct work_struct *work) |
| 573 | { |
| 574 | struct ieee80211_local *local = |
| 575 | container_of(work, struct ieee80211_local, restart_work); |
| 576 | |
| 577 | rtnl_lock(); |
| 578 | ieee80211_reconfig(local); |
| 579 | rtnl_unlock(); |
| 580 | } |
| 581 | |
| 582 | void ieee80211_restart_hw(struct ieee80211_hw *hw) |
| 583 | { |
| 584 | struct ieee80211_local *local = hw_to_local(hw); |
| 585 | |
| 586 | /* use this reason, __ieee80211_resume will unblock it */ |
| 587 | ieee80211_stop_queues_by_reason(hw, |
| 588 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| 589 | |
| 590 | schedule_work(&local->restart_work); |
| 591 | } |
| 592 | EXPORT_SYMBOL(ieee80211_restart_hw); |
| 593 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 594 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 595 | const struct ieee80211_ops *ops) |
| 596 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 597 | struct ieee80211_local *local; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 598 | int priv_size, i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 599 | struct wiphy *wiphy; |
| 600 | |
| 601 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 602 | * We use the wiphy priv data for both our ieee80211_local and for |
| 603 | * the driver's private data |
| 604 | * |
| 605 | * In memory it'll be like this: |
| 606 | * |
| 607 | * +-------------------------+ |
| 608 | * | struct wiphy | |
| 609 | * +-------------------------+ |
| 610 | * | struct ieee80211_local | |
| 611 | * +-------------------------+ |
| 612 | * | driver's private data | |
| 613 | * +-------------------------+ |
| 614 | * |
| 615 | */ |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 616 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 617 | |
| 618 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); |
| 619 | |
| 620 | if (!wiphy) |
| 621 | return NULL; |
| 622 | |
| 623 | wiphy->privid = mac80211_wiphy_privid; |
Johannes Berg | 18a8365 | 2009-03-31 12:12:05 +0200 | [diff] [blame] | 624 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 625 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
| 626 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - |
| 627 | sizeof(struct cfg80211_bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 628 | |
| 629 | local = wiphy_priv(wiphy); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 630 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 631 | local->hw.wiphy = wiphy; |
| 632 | |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 633 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 634 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 635 | BUG_ON(!ops->tx); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 636 | BUG_ON(!ops->start); |
| 637 | BUG_ON(!ops->stop); |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 638 | BUG_ON(!ops->config); |
| 639 | BUG_ON(!ops->add_interface); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 640 | BUG_ON(!ops->remove_interface); |
| 641 | BUG_ON(!ops->configure_filter); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 642 | local->ops = ops; |
| 643 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 644 | /* set up some defaults */ |
| 645 | local->hw.queues = 1; |
| 646 | local->hw.max_rates = 1; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 647 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
| 648 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 649 | local->hw.conf.radio_enabled = true; |
Johannes Berg | c428c89 | 2009-04-29 00:28:18 +0200 | [diff] [blame] | 650 | local->user_power_level = -1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 651 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 652 | INIT_LIST_HEAD(&local->interfaces); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 653 | mutex_init(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 654 | mutex_init(&local->scan_mtx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 655 | |
Johannes Berg | b16bd15 | 2008-04-11 21:40:35 +0200 | [diff] [blame] | 656 | spin_lock_init(&local->key_lock); |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 657 | spin_lock_init(&local->filter_lock); |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 658 | spin_lock_init(&local->queue_stop_reason_lock); |
| 659 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 660 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 661 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 662 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
| 663 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 664 | INIT_WORK(&local->dynamic_ps_enable_work, |
| 665 | ieee80211_dynamic_ps_enable_work); |
| 666 | INIT_WORK(&local->dynamic_ps_disable_work, |
| 667 | ieee80211_dynamic_ps_disable_work); |
| 668 | setup_timer(&local->dynamic_ps_timer, |
| 669 | ieee80211_dynamic_ps_timer, (unsigned long) local); |
| 670 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 671 | sta_info_init(local); |
| 672 | |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 673 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
| 674 | skb_queue_head_init(&local->pending[i]); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 675 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 676 | (unsigned long)local); |
| 677 | tasklet_disable(&local->tx_pending_tasklet); |
| 678 | |
| 679 | tasklet_init(&local->tasklet, |
| 680 | ieee80211_tasklet_handler, |
| 681 | (unsigned long) local); |
| 682 | tasklet_disable(&local->tasklet); |
| 683 | |
| 684 | skb_queue_head_init(&local->skb_queue); |
| 685 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 686 | |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 687 | spin_lock_init(&local->ampdu_lock); |
| 688 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 689 | return local_to_hw(local); |
| 690 | } |
| 691 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 692 | |
| 693 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 694 | { |
| 695 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 696 | int result; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 697 | enum ieee80211_band band; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 698 | int channels, i, j, max_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 699 | bool supp_ht; |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 700 | static const u32 cipher_suites[] = { |
| 701 | WLAN_CIPHER_SUITE_WEP40, |
| 702 | WLAN_CIPHER_SUITE_WEP104, |
| 703 | WLAN_CIPHER_SUITE_TKIP, |
| 704 | WLAN_CIPHER_SUITE_CCMP, |
| 705 | |
| 706 | /* keep last -- depends on hw flags! */ |
| 707 | WLAN_CIPHER_SUITE_AES_CMAC |
| 708 | }; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 709 | |
| 710 | /* |
| 711 | * generic code guarantees at least one band, |
| 712 | * set this very early because much code assumes |
| 713 | * that hw.conf.channel is assigned |
| 714 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 715 | channels = 0; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 716 | max_bitrates = 0; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 717 | supp_ht = false; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 718 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 719 | struct ieee80211_supported_band *sband; |
| 720 | |
| 721 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 722 | if (!sband) |
| 723 | continue; |
| 724 | if (!local->oper_channel) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 725 | /* init channel we're on */ |
| 726 | local->hw.conf.channel = |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 727 | local->oper_channel = &sband->channels[0]; |
| 728 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 729 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 730 | channels += sband->n_channels; |
| 731 | |
| 732 | if (max_bitrates < sband->n_bitrates) |
| 733 | max_bitrates = sband->n_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 734 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 735 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 736 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 737 | local->int_scan_req.n_channels = channels; |
| 738 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); |
| 739 | if (!local->int_scan_req.channels) |
| 740 | return -ENOMEM; |
| 741 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 742 | /* if low-level driver supports AP, we also support VLAN */ |
| 743 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) |
| 744 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| 745 | |
| 746 | /* mac80211 always supports monitor */ |
| 747 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| 748 | |
Johannes Berg | 77965c9 | 2009-02-18 18:45:06 +0100 | [diff] [blame] | 749 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
| 750 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
| 751 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) |
| 752 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
| 753 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 754 | /* |
| 755 | * Calculate scan IE length -- we need this to alloc |
| 756 | * memory and to subtract from the driver limit. It |
| 757 | * includes the (extended) supported rates and HT |
| 758 | * information -- SSID is the driver's responsibility. |
| 759 | */ |
| 760 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 761 | if (supp_ht) |
| 762 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 763 | |
| 764 | if (!local->ops->hw_scan) { |
| 765 | /* For hw_scan, driver needs to set these up. */ |
| 766 | local->hw.wiphy->max_scan_ssids = 4; |
| 767 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; |
| 768 | } |
| 769 | |
| 770 | /* |
| 771 | * If the driver supports any scan IEs, then assume the |
| 772 | * limit includes the IEs mac80211 will add, otherwise |
| 773 | * leave it at zero and let the driver sort it out; we |
| 774 | * still pass our IEs to the driver but userspace will |
| 775 | * not be allowed to in that case. |
| 776 | */ |
| 777 | if (local->hw.wiphy->max_scan_ie_len) |
| 778 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; |
| 779 | |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 780 | local->hw.wiphy->cipher_suites = cipher_suites; |
| 781 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); |
| 782 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) |
| 783 | local->hw.wiphy->n_cipher_suites--; |
| 784 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 785 | result = wiphy_register(local->hw.wiphy); |
| 786 | if (result < 0) |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 787 | goto fail_wiphy_register; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 788 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 789 | /* |
| 790 | * We use the number of queues for feature tests (QoS, HT) internally |
| 791 | * so restrict them appropriately. |
| 792 | */ |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 793 | if (hw->queues > IEEE80211_MAX_QUEUES) |
| 794 | hw->queues = IEEE80211_MAX_QUEUES; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 795 | |
Luis R. Rodriguez | 4ada424 | 2008-11-14 14:44:22 -0800 | [diff] [blame] | 796 | local->hw.workqueue = |
Bob Copeland | 30d3ef4 | 2009-01-23 23:09:35 -0500 | [diff] [blame] | 797 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 798 | if (!local->hw.workqueue) { |
| 799 | result = -ENOMEM; |
| 800 | goto fail_workqueue; |
| 801 | } |
| 802 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 803 | /* |
| 804 | * The hardware needs headroom for sending the frame, |
| 805 | * and we need some headroom for passing the frame to monitor |
| 806 | * interfaces, but never both at the same time. |
| 807 | */ |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 808 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 809 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 810 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 811 | debugfs_hw_add(local); |
| 812 | |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 813 | if (local->hw.max_listen_interval == 0) |
| 814 | local->hw.max_listen_interval = 1; |
| 815 | |
| 816 | local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| 817 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 818 | result = sta_info_start(local); |
| 819 | if (result < 0) |
| 820 | goto fail_sta_info; |
| 821 | |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 822 | result = ieee80211_wep_init(local); |
| 823 | if (result < 0) { |
| 824 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
| 825 | wiphy_name(local->hw.wiphy), result); |
| 826 | goto fail_wep; |
| 827 | } |
| 828 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 829 | rtnl_lock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 830 | |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 831 | result = ieee80211_init_rate_ctrl_alg(local, |
| 832 | hw->rate_control_algorithm); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 833 | if (result < 0) { |
| 834 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 835 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 836 | goto fail_rate; |
| 837 | } |
| 838 | |
Johannes Berg | 8dffff2 | 2008-12-09 00:10:30 +0100 | [diff] [blame] | 839 | /* add one default STA interface if supported */ |
| 840 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { |
| 841 | result = ieee80211_if_add(local, "wlan%d", NULL, |
| 842 | NL80211_IFTYPE_STATION, NULL); |
| 843 | if (result) |
| 844 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
| 845 | wiphy_name(local->hw.wiphy)); |
| 846 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 847 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 848 | rtnl_unlock(); |
| 849 | |
| 850 | ieee80211_led_init(local); |
| 851 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 852 | /* alloc internal scan request */ |
| 853 | i = 0; |
| 854 | local->int_scan_req.ssids = &local->scan_ssid; |
| 855 | local->int_scan_req.n_ssids = 1; |
| 856 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 857 | if (!hw->wiphy->bands[band]) |
| 858 | continue; |
| 859 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { |
| 860 | local->int_scan_req.channels[i] = |
| 861 | &hw->wiphy->bands[band]->channels[j]; |
| 862 | i++; |
| 863 | } |
| 864 | } |
| 865 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 866 | local->network_latency_notifier.notifier_call = |
| 867 | ieee80211_max_network_latency; |
| 868 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, |
| 869 | &local->network_latency_notifier); |
| 870 | |
| 871 | if (result) { |
| 872 | rtnl_lock(); |
| 873 | goto fail_pm_qos; |
| 874 | } |
| 875 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 876 | return 0; |
| 877 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 878 | fail_pm_qos: |
| 879 | ieee80211_led_exit(local); |
| 880 | ieee80211_remove_interfaces(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 881 | fail_rate: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 882 | rtnl_unlock(); |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 883 | ieee80211_wep_free(local); |
David S. Miller | aba7453 | 2009-04-29 20:30:35 -0700 | [diff] [blame] | 884 | fail_wep: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 885 | sta_info_stop(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 886 | fail_sta_info: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 887 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 888 | destroy_workqueue(local->hw.workqueue); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 889 | fail_workqueue: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 890 | wiphy_unregister(local->hw.wiphy); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 891 | fail_wiphy_register: |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 892 | kfree(local->int_scan_req.channels); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 893 | return result; |
| 894 | } |
| 895 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 896 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 897 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 898 | { |
| 899 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 900 | |
| 901 | tasklet_kill(&local->tx_pending_tasklet); |
| 902 | tasklet_kill(&local->tasklet); |
| 903 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 904 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
| 905 | &local->network_latency_notifier); |
| 906 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 907 | rtnl_lock(); |
| 908 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 909 | /* |
| 910 | * At this point, interface list manipulations are fine |
| 911 | * because the driver cannot be handing us frames any |
| 912 | * more and the tasklet is killed. |
| 913 | */ |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 914 | ieee80211_remove_interfaces(local); |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 915 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 916 | rtnl_unlock(); |
| 917 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 918 | ieee80211_clear_tx_pending(local); |
| 919 | sta_info_stop(local); |
| 920 | rate_control_deinitialize(local); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 921 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 922 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 923 | if (skb_queue_len(&local->skb_queue) |
| 924 | || skb_queue_len(&local->skb_queue_unreliable)) |
| 925 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 926 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 927 | skb_queue_purge(&local->skb_queue); |
| 928 | skb_queue_purge(&local->skb_queue_unreliable); |
| 929 | |
| 930 | destroy_workqueue(local->hw.workqueue); |
| 931 | wiphy_unregister(local->hw.wiphy); |
| 932 | ieee80211_wep_free(local); |
| 933 | ieee80211_led_exit(local); |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 934 | kfree(local->int_scan_req.channels); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 935 | } |
| 936 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 937 | |
| 938 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 939 | { |
| 940 | struct ieee80211_local *local = hw_to_local(hw); |
| 941 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 942 | mutex_destroy(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 943 | mutex_destroy(&local->scan_mtx); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 944 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 945 | wiphy_free(local->hw.wiphy); |
| 946 | } |
| 947 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 948 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 949 | static int __init ieee80211_init(void) |
| 950 | { |
| 951 | struct sk_buff *skb; |
| 952 | int ret; |
| 953 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 954 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| 955 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
Johannes Berg | c6a1fa1 | 2008-10-07 12:04:32 +0200 | [diff] [blame] | 956 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 957 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 958 | ret = rc80211_minstrel_init(); |
| 959 | if (ret) |
| 960 | return ret; |
| 961 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 962 | ret = rc80211_pid_init(); |
Mattias Nissler | ad01837 | 2007-12-19 01:25:57 +0100 | [diff] [blame] | 963 | if (ret) |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 964 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 965 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 966 | ieee80211_debugfs_netdev_init(); |
| 967 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 968 | return 0; |
| 969 | } |
| 970 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 971 | static void __exit ieee80211_exit(void) |
| 972 | { |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 973 | rc80211_pid_exit(); |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 974 | rc80211_minstrel_exit(); |
Johannes Berg | ac71c69 | 2007-10-28 14:17:44 +0100 | [diff] [blame] | 975 | |
Johannes Berg | 3b96766 | 2008-04-08 17:56:52 +0200 | [diff] [blame] | 976 | /* |
| 977 | * For key todo, it'll be empty by now but the work |
| 978 | * might still be scheduled. |
| 979 | */ |
| 980 | flush_scheduled_work(); |
| 981 | |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 982 | if (mesh_allocated) |
| 983 | ieee80211s_stop(); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 984 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 985 | ieee80211_debugfs_netdev_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 986 | } |
| 987 | |
| 988 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 989 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 990 | module_exit(ieee80211_exit); |
| 991 | |
| 992 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 993 | MODULE_LICENSE("GPL"); |