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, |
| 86 | local->mdev->mc_count, |
| 87 | local->mdev->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 | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 94 | /* master interface */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 95 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 96 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
| 97 | { |
| 98 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ |
| 99 | return ETH_ALEN; |
| 100 | } |
| 101 | |
| 102 | static const struct header_ops ieee80211_header_ops = { |
| 103 | .create = eth_header, |
| 104 | .parse = header_parse_80211, |
| 105 | .rebuild = eth_rebuild_header, |
| 106 | .cache = eth_header_cache, |
| 107 | .cache_update = eth_header_cache_update, |
| 108 | }; |
| 109 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 110 | static int ieee80211_master_open(struct net_device *dev) |
| 111 | { |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 112 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
| 113 | struct ieee80211_local *local = mpriv->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 114 | struct ieee80211_sub_if_data *sdata; |
| 115 | int res = -EOPNOTSUPP; |
| 116 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 117 | /* we hold the RTNL here so can safely walk the list */ |
| 118 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 119 | if (netif_running(sdata->dev)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 120 | res = 0; |
| 121 | break; |
| 122 | } |
| 123 | } |
Johannes Berg | 36d6825 | 2008-05-15 12:55:26 +0200 | [diff] [blame] | 124 | |
| 125 | if (res) |
| 126 | return res; |
| 127 | |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 128 | netif_tx_start_all_queues(local->mdev); |
Johannes Berg | 36d6825 | 2008-05-15 12:55:26 +0200 | [diff] [blame] | 129 | |
| 130 | return 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | static int ieee80211_master_stop(struct net_device *dev) |
| 134 | { |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 135 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
| 136 | struct ieee80211_local *local = mpriv->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 137 | struct ieee80211_sub_if_data *sdata; |
| 138 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 139 | /* we hold the RTNL here so can safely walk the list */ |
| 140 | list_for_each_entry(sdata, &local->interfaces, list) |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 141 | if (netif_running(sdata->dev)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 142 | dev_close(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 147 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
| 148 | { |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 149 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
| 150 | struct ieee80211_local *local = mpriv->local; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 151 | |
| 152 | ieee80211_configure_filter(local); |
| 153 | } |
| 154 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 155 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 156 | { |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 157 | struct ieee80211_channel *chan, *scan_chan; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 158 | int ret = 0; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 159 | int power; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 160 | enum nl80211_channel_type channel_type; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 161 | |
Johannes Berg | cb121ba | 2008-10-14 16:38:55 +0200 | [diff] [blame] | 162 | might_sleep(); |
| 163 | |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 164 | scan_chan = local->scan_channel; |
| 165 | |
| 166 | if (scan_chan) { |
| 167 | chan = scan_chan; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 168 | channel_type = NL80211_CHAN_NO_HT; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 169 | } else { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 170 | chan = local->oper_channel; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 171 | channel_type = local->oper_channel_type; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 172 | } |
| 173 | |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 174 | if (chan != local->hw.conf.channel || |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 175 | channel_type != local->hw.conf.channel_type) { |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 176 | local->hw.conf.channel = chan; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 177 | local->hw.conf.channel_type = channel_type; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 178 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
| 179 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 180 | |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 181 | if (scan_chan) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 182 | power = chan->max_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 183 | else |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 184 | power = local->power_constr_level ? |
| 185 | (chan->max_power - local->power_constr_level) : |
| 186 | chan->max_power; |
| 187 | |
Johannes Berg | 47afbaf | 2009-04-07 15:22:28 +0200 | [diff] [blame] | 188 | if (local->user_power_level >= 0) |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 189 | power = min(power, local->user_power_level); |
| 190 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 191 | if (local->hw.conf.power_level != power) { |
| 192 | changed |= IEEE80211_CONF_CHANGE_POWER; |
| 193 | local->hw.conf.power_level = power; |
| 194 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 195 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 196 | if (changed && local->open_count) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 197 | ret = drv_config(local, changed); |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 198 | /* |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 199 | * Goal: |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 200 | * HW reconfiguration should never fail, the driver has told |
| 201 | * 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] | 202 | * |
| 203 | * Current status: |
| 204 | * rfkill is not integrated with mac80211 and a |
| 205 | * configuration command can thus fail if hardware rfkill |
| 206 | * is enabled |
| 207 | * |
| 208 | * FIXME: integrate rfkill with mac80211 and then add this |
| 209 | * WARN_ON() back |
| 210 | * |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 211 | */ |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 212 | /* WARN_ON(ret); */ |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 213 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 214 | |
| 215 | return ret; |
| 216 | } |
| 217 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 218 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| 219 | u32 changed) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 220 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 221 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 9cef873 | 2009-05-14 13:10:14 +0200 | [diff] [blame] | 222 | static const u8 zero[ETH_ALEN] = { 0 }; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 223 | |
| 224 | if (!changed) |
| 225 | return; |
| 226 | |
Johannes Berg | 9cef873 | 2009-05-14 13:10:14 +0200 | [diff] [blame] | 227 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
| 228 | /* |
| 229 | * While not associated, claim a BSSID of all-zeroes |
| 230 | * so that drivers don't do any weird things with the |
| 231 | * BSSID at that time. |
| 232 | */ |
| 233 | if (sdata->vif.bss_conf.assoc) |
| 234 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
| 235 | else |
| 236 | sdata->vif.bss_conf.bssid = zero; |
| 237 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 238 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
| 239 | else if (sdata->vif.type == NL80211_IFTYPE_AP) |
| 240 | sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; |
| 241 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 242 | sdata->vif.bss_conf.bssid = zero; |
| 243 | } else { |
| 244 | WARN_ON(1); |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | switch (sdata->vif.type) { |
| 249 | case NL80211_IFTYPE_AP: |
| 250 | case NL80211_IFTYPE_ADHOC: |
| 251 | case NL80211_IFTYPE_MESH_POINT: |
| 252 | break; |
| 253 | default: |
| 254 | /* do not warn to simplify caller in scan.c */ |
| 255 | changed &= ~BSS_CHANGED_BEACON_ENABLED; |
| 256 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) |
| 257 | return; |
| 258 | break; |
| 259 | } |
| 260 | |
| 261 | if (changed & BSS_CHANGED_BEACON_ENABLED) { |
| 262 | if (local->sw_scanning) { |
| 263 | sdata->vif.bss_conf.enable_beacon = false; |
| 264 | } else { |
| 265 | /* |
| 266 | * Beacon should be enabled, but AP mode must |
| 267 | * check whether there is a beacon configured. |
| 268 | */ |
| 269 | switch (sdata->vif.type) { |
| 270 | case NL80211_IFTYPE_AP: |
| 271 | sdata->vif.bss_conf.enable_beacon = |
| 272 | !!rcu_dereference(sdata->u.ap.beacon); |
| 273 | break; |
| 274 | case NL80211_IFTYPE_ADHOC: |
| 275 | sdata->vif.bss_conf.enable_beacon = |
| 276 | !!rcu_dereference(sdata->u.ibss.presp); |
| 277 | break; |
| 278 | case NL80211_IFTYPE_MESH_POINT: |
| 279 | sdata->vif.bss_conf.enable_beacon = true; |
| 280 | break; |
| 281 | default: |
| 282 | /* not reached */ |
| 283 | WARN_ON(1); |
| 284 | break; |
| 285 | } |
| 286 | } |
| 287 | } |
| 288 | |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 289 | drv_bss_info_changed(local, &sdata->vif, |
| 290 | &sdata->vif.bss_conf, changed); |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 291 | |
Johannes Berg | e535c75 | 2009-05-23 11:18:45 +0200 | [diff] [blame] | 292 | /* DEPRECATED */ |
| 293 | local->hw.conf.beacon_int = sdata->vif.bss_conf.beacon_int; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 294 | } |
| 295 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 296 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 297 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 298 | sdata->vif.bss_conf.use_cts_prot = false; |
| 299 | sdata->vif.bss_conf.use_short_preamble = false; |
| 300 | sdata->vif.bss_conf.use_short_slot = false; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 301 | return BSS_CHANGED_ERP_CTS_PROT | |
| 302 | BSS_CHANGED_ERP_PREAMBLE | |
| 303 | BSS_CHANGED_ERP_SLOT; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 304 | } |
| 305 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 306 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 307 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 308 | { |
| 309 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 310 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 311 | int tmp; |
| 312 | |
| 313 | skb->dev = local->mdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 314 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 315 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 316 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
| 317 | tmp = skb_queue_len(&local->skb_queue) + |
| 318 | skb_queue_len(&local->skb_queue_unreliable); |
| 319 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| 320 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 321 | dev_kfree_skb_irq(skb); |
| 322 | tmp--; |
| 323 | I802_DEBUG_INC(local->tx_status_drop); |
| 324 | } |
| 325 | tasklet_schedule(&local->tasklet); |
| 326 | } |
| 327 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| 328 | |
| 329 | static void ieee80211_tasklet_handler(unsigned long data) |
| 330 | { |
| 331 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 332 | struct sk_buff *skb; |
| 333 | struct ieee80211_rx_status rx_status; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 334 | struct ieee80211_ra_tid *ra_tid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 335 | |
| 336 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 337 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 338 | switch (skb->pkt_type) { |
| 339 | case IEEE80211_RX_MSG: |
| 340 | /* status is in skb->cb */ |
| 341 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 342 | /* Clear skb->pkt_type in order to not confuse kernel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 343 | * netstack. */ |
| 344 | skb->pkt_type = 0; |
| 345 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); |
| 346 | break; |
| 347 | case IEEE80211_TX_STATUS_MSG: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 348 | skb->pkt_type = 0; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 349 | ieee80211_tx_status(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 350 | break; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 351 | case IEEE80211_DELBA_MSG: |
| 352 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 353 | ieee80211_stop_tx_ba_cb(local_to_hw(local), |
| 354 | ra_tid->ra, ra_tid->tid); |
| 355 | dev_kfree_skb(skb); |
| 356 | break; |
| 357 | case IEEE80211_ADDBA_MSG: |
| 358 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 359 | ieee80211_start_tx_ba_cb(local_to_hw(local), |
| 360 | ra_tid->ra, ra_tid->tid); |
| 361 | dev_kfree_skb(skb); |
| 362 | break ; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 363 | default: |
Larry Finger | 5e3f308 | 2008-12-17 14:26:59 -0600 | [diff] [blame] | 364 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
| 365 | skb->pkt_type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 366 | dev_kfree_skb(skb); |
| 367 | break; |
| 368 | } |
| 369 | } |
| 370 | } |
| 371 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 372 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
| 373 | * make a prepared TX frame (one that has been given to hw) to look like brand |
| 374 | * new IEEE 802.11 frame that is ready to go through TX processing again. |
Johannes Berg | d0f0980 | 2008-07-29 11:32:07 +0200 | [diff] [blame] | 375 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 376 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
| 377 | struct ieee80211_key *key, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 378 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 379 | { |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 380 | unsigned int hdrlen, iv_len, mic_len; |
| 381 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 382 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 383 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 384 | |
| 385 | if (!key) |
| 386 | goto no_key; |
| 387 | |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 388 | switch (key->conf.alg) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 389 | case ALG_WEP: |
| 390 | iv_len = WEP_IV_LEN; |
| 391 | mic_len = WEP_ICV_LEN; |
| 392 | break; |
| 393 | case ALG_TKIP: |
| 394 | iv_len = TKIP_IV_LEN; |
| 395 | mic_len = TKIP_ICV_LEN; |
| 396 | break; |
| 397 | case ALG_CCMP: |
| 398 | iv_len = CCMP_HDR_LEN; |
| 399 | mic_len = CCMP_MIC_LEN; |
| 400 | break; |
| 401 | default: |
| 402 | goto no_key; |
| 403 | } |
| 404 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 405 | if (skb->len >= hdrlen + mic_len && |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 406 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 407 | skb_trim(skb, skb->len - mic_len); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 408 | if (skb->len >= hdrlen + iv_len) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 409 | memmove(skb->data + iv_len, skb->data, hdrlen); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 410 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 411 | } |
| 412 | |
| 413 | no_key: |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 414 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
| 415 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); |
| 416 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, |
| 417 | hdrlen - IEEE80211_QOS_CTL_LEN); |
| 418 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 419 | } |
| 420 | } |
| 421 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 422 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
| 423 | struct sta_info *sta, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 424 | struct sk_buff *skb) |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 425 | { |
| 426 | sta->tx_filtered_count++; |
| 427 | |
| 428 | /* |
| 429 | * Clear the TX filter mask for this STA when sending the next |
| 430 | * packet. If the STA went to power save mode, this will happen |
Yi Zhu | f6d9710 | 2008-05-27 17:50:50 +0300 | [diff] [blame] | 431 | * when it wakes up for the next time. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 432 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 433 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 434 | |
| 435 | /* |
| 436 | * This code races in the following way: |
| 437 | * |
| 438 | * (1) STA sends frame indicating it will go to sleep and does so |
| 439 | * (2) hardware/firmware adds STA to filter list, passes frame up |
| 440 | * (3) hardware/firmware processes TX fifo and suppresses a frame |
| 441 | * (4) we get TX status before having processed the frame and |
| 442 | * knowing that the STA has gone to sleep. |
| 443 | * |
| 444 | * This is actually quite unlikely even when both those events are |
| 445 | * processed from interrupts coming in quickly after one another or |
| 446 | * even at the same time because we queue both TX status events and |
| 447 | * RX frames to be processed by a tasklet and process them in the |
| 448 | * same order that they were received or TX status last. Hence, there |
| 449 | * is no race as long as the frame RX is processed before the next TX |
| 450 | * status, which drivers can ensure, see below. |
| 451 | * |
| 452 | * Note that this can only happen if the hardware or firmware can |
| 453 | * actually add STAs to the filter list, if this is done by the |
| 454 | * driver in response to set_tim() (which will only reduce the race |
| 455 | * this whole filtering tries to solve, not completely solve it) |
| 456 | * this situation cannot happen. |
| 457 | * |
| 458 | * To completely solve this race drivers need to make sure that they |
| 459 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
| 460 | * functions and |
| 461 | * (b) always process RX events before TX status events if ordering |
| 462 | * can be unknown, for example with different interrupt status |
| 463 | * bits. |
| 464 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 465 | if (test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 466 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 467 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 468 | skb_queue_tail(&sta->tx_filtered, skb); |
| 469 | return; |
| 470 | } |
| 471 | |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 472 | if (!test_sta_flags(sta, WLAN_STA_PS) && !skb->requeue) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 473 | /* Software retry the packet once */ |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 474 | skb->requeue = 1; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 475 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 476 | dev_queue_xmit(skb); |
| 477 | return; |
| 478 | } |
| 479 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 480 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 481 | if (net_ratelimit()) |
| 482 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " |
| 483 | "queue_len=%d PS=%d @%lu\n", |
| 484 | wiphy_name(local->hw.wiphy), |
| 485 | skb_queue_len(&sta->tx_filtered), |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 486 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 487 | #endif |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 488 | dev_kfree_skb(skb); |
| 489 | } |
| 490 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 491 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 492 | { |
| 493 | struct sk_buff *skb2; |
| 494 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 495 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 496 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 497 | u16 frag, type; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 498 | __le16 fc; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 499 | struct ieee80211_supported_band *sband; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 500 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
| 501 | struct ieee80211_sub_if_data *sdata; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 502 | struct net_device *prev_dev = NULL; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 503 | struct sta_info *sta; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 504 | int retry_count = -1, i; |
| 505 | |
| 506 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { |
| 507 | /* the HW cannot have attempted that rate */ |
| 508 | if (i >= hw->max_rates) { |
| 509 | info->status.rates[i].idx = -1; |
| 510 | info->status.rates[i].count = 0; |
| 511 | } |
| 512 | |
| 513 | retry_count += info->status.rates[i].count; |
| 514 | } |
| 515 | if (retry_count < 0) |
| 516 | retry_count = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 517 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 518 | rcu_read_lock(); |
| 519 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 520 | sband = local->hw.wiphy->bands[info->band]; |
| 521 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 522 | sta = sta_info_get(local, hdr->addr1); |
| 523 | |
| 524 | if (sta) { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 525 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 526 | test_sta_flags(sta, WLAN_STA_PS)) { |
| 527 | /* |
| 528 | * The STA is in power save mode, so assume |
| 529 | * that this TX packet failed because of that. |
| 530 | */ |
| 531 | ieee80211_handle_filtered_frame(local, sta, skb); |
| 532 | rcu_read_unlock(); |
| 533 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 534 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 535 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 536 | fc = hdr->frame_control; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 537 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 538 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
| 539 | (ieee80211_is_data_qos(fc))) { |
| 540 | u16 tid, ssn; |
| 541 | u8 *qc; |
| 542 | |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 543 | qc = ieee80211_get_qos_ctl(hdr); |
| 544 | tid = qc[0] & 0xf; |
| 545 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
| 546 | & IEEE80211_SCTL_SEQ); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 547 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 548 | tid, ssn); |
| 549 | } |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 550 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 551 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 552 | ieee80211_handle_filtered_frame(local, sta, skb); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 553 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 554 | return; |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 555 | } else { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 556 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 557 | sta->tx_retry_failed++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 558 | sta->tx_retry_count += retry_count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 559 | } |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 560 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 561 | rate_control_tx_status(local, sband, sta, skb); |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 562 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 563 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 564 | rcu_read_unlock(); |
| 565 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 566 | ieee80211_led_tx(local, 0); |
| 567 | |
| 568 | /* SNMP counters |
| 569 | * Fragments are passed to low-level drivers as separate skbs, so these |
| 570 | * are actually fragments, not frames. Update frame counters only for |
| 571 | * the first fragment of the frame. */ |
| 572 | |
| 573 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
| 574 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; |
| 575 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 576 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 577 | if (frag == 0) { |
| 578 | local->dot11TransmittedFrameCount++; |
| 579 | if (is_multicast_ether_addr(hdr->addr1)) |
| 580 | local->dot11MulticastTransmittedFrameCount++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 581 | if (retry_count > 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 582 | local->dot11RetryCount++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 583 | if (retry_count > 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 584 | local->dot11MultipleRetryCount++; |
| 585 | } |
| 586 | |
| 587 | /* This counter shall be incremented for an acknowledged MPDU |
| 588 | * with an individual address in the address 1 field or an MPDU |
| 589 | * with a multicast address in the address 1 field of type Data |
| 590 | * or Management. */ |
| 591 | if (!is_multicast_ether_addr(hdr->addr1) || |
| 592 | type == IEEE80211_FTYPE_DATA || |
| 593 | type == IEEE80211_FTYPE_MGMT) |
| 594 | local->dot11TransmittedFragmentCount++; |
| 595 | } else { |
| 596 | if (frag == 0) |
| 597 | local->dot11FailedCount++; |
| 598 | } |
| 599 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 600 | /* this was a transmitted frame, but now we want to reuse it */ |
| 601 | skb_orphan(skb); |
| 602 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 603 | /* |
| 604 | * This is a bit racy but we can avoid a lot of work |
| 605 | * with this test... |
| 606 | */ |
| 607 | if (!local->monitors && !local->cooked_mntrs) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 608 | dev_kfree_skb(skb); |
| 609 | return; |
| 610 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 611 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 612 | /* send frame to monitor interfaces now */ |
| 613 | |
| 614 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
| 615 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); |
| 616 | dev_kfree_skb(skb); |
| 617 | return; |
| 618 | } |
| 619 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 620 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 621 | skb_push(skb, sizeof(*rthdr)); |
| 622 | |
| 623 | memset(rthdr, 0, sizeof(*rthdr)); |
| 624 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); |
| 625 | rthdr->hdr.it_present = |
| 626 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 627 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
| 628 | (1 << IEEE80211_RADIOTAP_RATE)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 629 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 630 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 631 | !is_multicast_ether_addr(hdr->addr1)) |
| 632 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); |
| 633 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 634 | /* |
| 635 | * XXX: Once radiotap gets the bitmap reset thing the vendor |
| 636 | * extensions proposal contains, we can actually report |
| 637 | * the whole set of tries we did. |
| 638 | */ |
| 639 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || |
| 640 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 641 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 642 | 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] | 643 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 644 | if (info->status.rates[0].idx >= 0 && |
| 645 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) |
| 646 | rthdr->rate = sband->bitrates[ |
| 647 | info->status.rates[0].idx].bitrate / 5; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 648 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 649 | /* for now report the total retry_count */ |
| 650 | rthdr->data_retries = retry_count; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 651 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 652 | /* XXX: is this sufficient for BPF? */ |
| 653 | skb_set_mac_header(skb, 0); |
| 654 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 655 | skb->pkt_type = PACKET_OTHERHOST; |
| 656 | skb->protocol = htons(ETH_P_802_2); |
| 657 | memset(skb->cb, 0, sizeof(skb->cb)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 658 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 659 | rcu_read_lock(); |
| 660 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 661 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 662 | if (!netif_running(sdata->dev)) |
| 663 | continue; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 664 | |
| 665 | if (prev_dev) { |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 666 | skb2 = skb_clone(skb, GFP_ATOMIC); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 667 | if (skb2) { |
| 668 | skb2->dev = prev_dev; |
| 669 | netif_rx(skb2); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | prev_dev = sdata->dev; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 674 | } |
| 675 | } |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 676 | if (prev_dev) { |
| 677 | skb->dev = prev_dev; |
| 678 | netif_rx(skb); |
| 679 | skb = NULL; |
| 680 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 681 | rcu_read_unlock(); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 682 | dev_kfree_skb(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 683 | } |
| 684 | EXPORT_SYMBOL(ieee80211_tx_status); |
| 685 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 686 | static void ieee80211_restart_work(struct work_struct *work) |
| 687 | { |
| 688 | struct ieee80211_local *local = |
| 689 | container_of(work, struct ieee80211_local, restart_work); |
| 690 | |
| 691 | rtnl_lock(); |
| 692 | ieee80211_reconfig(local); |
| 693 | rtnl_unlock(); |
| 694 | } |
| 695 | |
| 696 | void ieee80211_restart_hw(struct ieee80211_hw *hw) |
| 697 | { |
| 698 | struct ieee80211_local *local = hw_to_local(hw); |
| 699 | |
| 700 | /* use this reason, __ieee80211_resume will unblock it */ |
| 701 | ieee80211_stop_queues_by_reason(hw, |
| 702 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| 703 | |
| 704 | schedule_work(&local->restart_work); |
| 705 | } |
| 706 | EXPORT_SYMBOL(ieee80211_restart_hw); |
| 707 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 708 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 709 | const struct ieee80211_ops *ops) |
| 710 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 711 | struct ieee80211_local *local; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 712 | int priv_size, i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 713 | struct wiphy *wiphy; |
| 714 | |
| 715 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 716 | * We use the wiphy priv data for both our ieee80211_local and for |
| 717 | * the driver's private data |
| 718 | * |
| 719 | * In memory it'll be like this: |
| 720 | * |
| 721 | * +-------------------------+ |
| 722 | * | struct wiphy | |
| 723 | * +-------------------------+ |
| 724 | * | struct ieee80211_local | |
| 725 | * +-------------------------+ |
| 726 | * | driver's private data | |
| 727 | * +-------------------------+ |
| 728 | * |
| 729 | */ |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 730 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 731 | |
| 732 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); |
| 733 | |
| 734 | if (!wiphy) |
| 735 | return NULL; |
| 736 | |
| 737 | wiphy->privid = mac80211_wiphy_privid; |
Johannes Berg | 18a8365 | 2009-03-31 12:12:05 +0200 | [diff] [blame] | 738 | |
Johannes Berg | 00d3f14 | 2009-02-10 21:26:00 +0100 | [diff] [blame] | 739 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
| 740 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - |
| 741 | sizeof(struct cfg80211_bss); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 742 | |
| 743 | local = wiphy_priv(wiphy); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 744 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 745 | local->hw.wiphy = wiphy; |
| 746 | |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 747 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 748 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 749 | BUG_ON(!ops->tx); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 750 | BUG_ON(!ops->start); |
| 751 | BUG_ON(!ops->stop); |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 752 | BUG_ON(!ops->config); |
| 753 | BUG_ON(!ops->add_interface); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 754 | BUG_ON(!ops->remove_interface); |
| 755 | BUG_ON(!ops->configure_filter); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 756 | local->ops = ops; |
| 757 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 758 | /* set up some defaults */ |
| 759 | local->hw.queues = 1; |
| 760 | local->hw.max_rates = 1; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 761 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
| 762 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 763 | local->hw.conf.radio_enabled = true; |
Johannes Berg | c428c89 | 2009-04-29 00:28:18 +0200 | [diff] [blame] | 764 | local->user_power_level = -1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 765 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 766 | INIT_LIST_HEAD(&local->interfaces); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 767 | mutex_init(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 768 | mutex_init(&local->scan_mtx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 769 | |
Johannes Berg | b16bd15 | 2008-04-11 21:40:35 +0200 | [diff] [blame] | 770 | spin_lock_init(&local->key_lock); |
| 771 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 772 | spin_lock_init(&local->queue_stop_reason_lock); |
| 773 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 774 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 775 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 776 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
| 777 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 778 | INIT_WORK(&local->dynamic_ps_enable_work, |
| 779 | ieee80211_dynamic_ps_enable_work); |
| 780 | INIT_WORK(&local->dynamic_ps_disable_work, |
| 781 | ieee80211_dynamic_ps_disable_work); |
| 782 | setup_timer(&local->dynamic_ps_timer, |
| 783 | ieee80211_dynamic_ps_timer, (unsigned long) local); |
| 784 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 785 | sta_info_init(local); |
| 786 | |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 787 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
| 788 | skb_queue_head_init(&local->pending[i]); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 789 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 790 | (unsigned long)local); |
| 791 | tasklet_disable(&local->tx_pending_tasklet); |
| 792 | |
| 793 | tasklet_init(&local->tasklet, |
| 794 | ieee80211_tasklet_handler, |
| 795 | (unsigned long) local); |
| 796 | tasklet_disable(&local->tasklet); |
| 797 | |
| 798 | skb_queue_head_init(&local->skb_queue); |
| 799 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 800 | |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 801 | spin_lock_init(&local->ampdu_lock); |
| 802 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 803 | return local_to_hw(local); |
| 804 | } |
| 805 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 806 | |
Johannes Berg | 7230645 | 2009-01-30 13:36:25 +0100 | [diff] [blame] | 807 | static const struct net_device_ops ieee80211_master_ops = { |
| 808 | .ndo_start_xmit = ieee80211_master_start_xmit, |
| 809 | .ndo_open = ieee80211_master_open, |
| 810 | .ndo_stop = ieee80211_master_stop, |
| 811 | .ndo_set_multicast_list = ieee80211_master_set_multicast_list, |
| 812 | .ndo_select_queue = ieee80211_select_queue, |
| 813 | }; |
| 814 | |
| 815 | static void ieee80211_master_setup(struct net_device *mdev) |
| 816 | { |
| 817 | mdev->type = ARPHRD_IEEE80211; |
| 818 | mdev->netdev_ops = &ieee80211_master_ops; |
| 819 | mdev->header_ops = &ieee80211_header_ops; |
| 820 | mdev->tx_queue_len = 1000; |
| 821 | mdev->addr_len = ETH_ALEN; |
| 822 | } |
| 823 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 824 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 825 | { |
| 826 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 827 | int result; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 828 | enum ieee80211_band band; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 829 | struct net_device *mdev; |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 830 | struct ieee80211_master_priv *mpriv; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 831 | int channels, i, j, max_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 832 | bool supp_ht; |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 833 | static const u32 cipher_suites[] = { |
| 834 | WLAN_CIPHER_SUITE_WEP40, |
| 835 | WLAN_CIPHER_SUITE_WEP104, |
| 836 | WLAN_CIPHER_SUITE_TKIP, |
| 837 | WLAN_CIPHER_SUITE_CCMP, |
| 838 | |
| 839 | /* keep last -- depends on hw flags! */ |
| 840 | WLAN_CIPHER_SUITE_AES_CMAC |
| 841 | }; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 842 | |
| 843 | /* |
| 844 | * generic code guarantees at least one band, |
| 845 | * set this very early because much code assumes |
| 846 | * that hw.conf.channel is assigned |
| 847 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 848 | channels = 0; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 849 | max_bitrates = 0; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 850 | supp_ht = false; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 851 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 852 | struct ieee80211_supported_band *sband; |
| 853 | |
| 854 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 855 | if (!sband) |
| 856 | continue; |
| 857 | if (!local->oper_channel) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 858 | /* init channel we're on */ |
| 859 | local->hw.conf.channel = |
Johannes Berg | 58905ca | 2009-05-07 14:23:01 +0200 | [diff] [blame] | 860 | local->oper_channel = &sband->channels[0]; |
| 861 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 862 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 863 | channels += sband->n_channels; |
| 864 | |
| 865 | if (max_bitrates < sband->n_bitrates) |
| 866 | max_bitrates = sband->n_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 867 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 868 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 869 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 870 | local->int_scan_req.n_channels = channels; |
| 871 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); |
| 872 | if (!local->int_scan_req.channels) |
| 873 | return -ENOMEM; |
| 874 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 875 | /* if low-level driver supports AP, we also support VLAN */ |
| 876 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) |
| 877 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| 878 | |
| 879 | /* mac80211 always supports monitor */ |
| 880 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| 881 | |
Johannes Berg | 77965c9 | 2009-02-18 18:45:06 +0100 | [diff] [blame] | 882 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
| 883 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
| 884 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) |
| 885 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
| 886 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 887 | /* |
| 888 | * Calculate scan IE length -- we need this to alloc |
| 889 | * memory and to subtract from the driver limit. It |
| 890 | * includes the (extended) supported rates and HT |
| 891 | * information -- SSID is the driver's responsibility. |
| 892 | */ |
| 893 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 894 | if (supp_ht) |
| 895 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 896 | |
| 897 | if (!local->ops->hw_scan) { |
| 898 | /* For hw_scan, driver needs to set these up. */ |
| 899 | local->hw.wiphy->max_scan_ssids = 4; |
| 900 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; |
| 901 | } |
| 902 | |
| 903 | /* |
| 904 | * If the driver supports any scan IEs, then assume the |
| 905 | * limit includes the IEs mac80211 will add, otherwise |
| 906 | * leave it at zero and let the driver sort it out; we |
| 907 | * still pass our IEs to the driver but userspace will |
| 908 | * not be allowed to in that case. |
| 909 | */ |
| 910 | if (local->hw.wiphy->max_scan_ie_len) |
| 911 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; |
| 912 | |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 913 | local->hw.wiphy->cipher_suites = cipher_suites; |
| 914 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); |
| 915 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) |
| 916 | local->hw.wiphy->n_cipher_suites--; |
| 917 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 918 | result = wiphy_register(local->hw.wiphy); |
| 919 | if (result < 0) |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 920 | goto fail_wiphy_register; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 921 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 922 | /* |
| 923 | * We use the number of queues for feature tests (QoS, HT) internally |
| 924 | * so restrict them appropriately. |
| 925 | */ |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 926 | if (hw->queues > IEEE80211_MAX_QUEUES) |
| 927 | hw->queues = IEEE80211_MAX_QUEUES; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 928 | |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 929 | mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), |
Johannes Berg | 7230645 | 2009-01-30 13:36:25 +0100 | [diff] [blame] | 930 | "wmaster%d", ieee80211_master_setup, |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 931 | hw->queues); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 932 | if (!mdev) |
| 933 | goto fail_mdev_alloc; |
| 934 | |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 935 | mpriv = netdev_priv(mdev); |
| 936 | mpriv->local = local; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 937 | local->mdev = mdev; |
| 938 | |
Luis R. Rodriguez | 4ada424 | 2008-11-14 14:44:22 -0800 | [diff] [blame] | 939 | local->hw.workqueue = |
Bob Copeland | 30d3ef4 | 2009-01-23 23:09:35 -0500 | [diff] [blame] | 940 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 941 | if (!local->hw.workqueue) { |
| 942 | result = -ENOMEM; |
| 943 | goto fail_workqueue; |
| 944 | } |
| 945 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 946 | /* |
| 947 | * The hardware needs headroom for sending the frame, |
| 948 | * and we need some headroom for passing the frame to monitor |
| 949 | * interfaces, but never both at the same time. |
| 950 | */ |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 951 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 952 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 953 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 954 | debugfs_hw_add(local); |
| 955 | |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 956 | if (local->hw.max_listen_interval == 0) |
| 957 | local->hw.max_listen_interval = 1; |
| 958 | |
| 959 | local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| 960 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 961 | result = sta_info_start(local); |
| 962 | if (result < 0) |
| 963 | goto fail_sta_info; |
| 964 | |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 965 | result = ieee80211_wep_init(local); |
| 966 | if (result < 0) { |
| 967 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
| 968 | wiphy_name(local->hw.wiphy), result); |
| 969 | goto fail_wep; |
| 970 | } |
| 971 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 972 | rtnl_lock(); |
| 973 | result = dev_alloc_name(local->mdev, local->mdev->name); |
| 974 | if (result < 0) |
| 975 | goto fail_dev; |
| 976 | |
| 977 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
| 978 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); |
Johannes Berg | 076ae60 | 2009-02-11 20:27:30 +0100 | [diff] [blame] | 979 | local->mdev->features |= NETIF_F_NETNS_LOCAL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 980 | |
| 981 | result = register_netdevice(local->mdev); |
| 982 | if (result < 0) |
| 983 | goto fail_dev; |
| 984 | |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 985 | result = ieee80211_init_rate_ctrl_alg(local, |
| 986 | hw->rate_control_algorithm); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 987 | if (result < 0) { |
| 988 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 989 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 990 | goto fail_rate; |
| 991 | } |
| 992 | |
Johannes Berg | 8dffff2 | 2008-12-09 00:10:30 +0100 | [diff] [blame] | 993 | /* add one default STA interface if supported */ |
| 994 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { |
| 995 | result = ieee80211_if_add(local, "wlan%d", NULL, |
| 996 | NL80211_IFTYPE_STATION, NULL); |
| 997 | if (result) |
| 998 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
| 999 | wiphy_name(local->hw.wiphy)); |
| 1000 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1001 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1002 | rtnl_unlock(); |
| 1003 | |
| 1004 | ieee80211_led_init(local); |
| 1005 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1006 | /* alloc internal scan request */ |
| 1007 | i = 0; |
| 1008 | local->int_scan_req.ssids = &local->scan_ssid; |
| 1009 | local->int_scan_req.n_ssids = 1; |
| 1010 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 1011 | if (!hw->wiphy->bands[band]) |
| 1012 | continue; |
| 1013 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { |
| 1014 | local->int_scan_req.channels[i] = |
| 1015 | &hw->wiphy->bands[band]->channels[j]; |
| 1016 | i++; |
| 1017 | } |
| 1018 | } |
| 1019 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1020 | local->network_latency_notifier.notifier_call = |
| 1021 | ieee80211_max_network_latency; |
| 1022 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, |
| 1023 | &local->network_latency_notifier); |
| 1024 | |
| 1025 | if (result) { |
| 1026 | rtnl_lock(); |
| 1027 | goto fail_pm_qos; |
| 1028 | } |
| 1029 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1030 | return 0; |
| 1031 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1032 | fail_pm_qos: |
| 1033 | ieee80211_led_exit(local); |
| 1034 | ieee80211_remove_interfaces(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1035 | fail_rate: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1036 | unregister_netdevice(local->mdev); |
Pavel Emelyanov | 339a7c4 | 2008-05-04 17:59:30 -0700 | [diff] [blame] | 1037 | local->mdev = NULL; |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1038 | fail_dev: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1039 | rtnl_unlock(); |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 1040 | ieee80211_wep_free(local); |
David S. Miller | aba7453 | 2009-04-29 20:30:35 -0700 | [diff] [blame] | 1041 | fail_wep: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1042 | sta_info_stop(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1043 | fail_sta_info: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1044 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1045 | destroy_workqueue(local->hw.workqueue); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1046 | fail_workqueue: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1047 | if (local->mdev) |
| 1048 | free_netdev(local->mdev); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1049 | fail_mdev_alloc: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1050 | wiphy_unregister(local->hw.wiphy); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1051 | fail_wiphy_register: |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1052 | kfree(local->int_scan_req.channels); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1053 | return result; |
| 1054 | } |
| 1055 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 1056 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1057 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 1058 | { |
| 1059 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1060 | |
| 1061 | tasklet_kill(&local->tx_pending_tasklet); |
| 1062 | tasklet_kill(&local->tasklet); |
| 1063 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1064 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
| 1065 | &local->network_latency_notifier); |
| 1066 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1067 | rtnl_lock(); |
| 1068 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1069 | /* |
| 1070 | * At this point, interface list manipulations are fine |
| 1071 | * because the driver cannot be handing us frames any |
| 1072 | * more and the tasklet is killed. |
| 1073 | */ |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 1074 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1075 | /* First, we remove all virtual interfaces. */ |
| 1076 | ieee80211_remove_interfaces(local); |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 1077 | |
| 1078 | /* then, finally, remove the master interface */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1079 | unregister_netdevice(local->mdev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1080 | |
| 1081 | rtnl_unlock(); |
| 1082 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1083 | ieee80211_clear_tx_pending(local); |
| 1084 | sta_info_stop(local); |
| 1085 | rate_control_deinitialize(local); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1086 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1087 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1088 | if (skb_queue_len(&local->skb_queue) |
| 1089 | || skb_queue_len(&local->skb_queue_unreliable)) |
| 1090 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1091 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1092 | skb_queue_purge(&local->skb_queue); |
| 1093 | skb_queue_purge(&local->skb_queue_unreliable); |
| 1094 | |
| 1095 | destroy_workqueue(local->hw.workqueue); |
| 1096 | wiphy_unregister(local->hw.wiphy); |
| 1097 | ieee80211_wep_free(local); |
| 1098 | ieee80211_led_exit(local); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1099 | free_netdev(local->mdev); |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1100 | kfree(local->int_scan_req.channels); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1101 | } |
| 1102 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 1103 | |
| 1104 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 1105 | { |
| 1106 | struct ieee80211_local *local = hw_to_local(hw); |
| 1107 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1108 | mutex_destroy(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 1109 | mutex_destroy(&local->scan_mtx); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1110 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1111 | wiphy_free(local->hw.wiphy); |
| 1112 | } |
| 1113 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 1114 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1115 | static int __init ieee80211_init(void) |
| 1116 | { |
| 1117 | struct sk_buff *skb; |
| 1118 | int ret; |
| 1119 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1120 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| 1121 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
Johannes Berg | c6a1fa1 | 2008-10-07 12:04:32 +0200 | [diff] [blame] | 1122 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1123 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 1124 | ret = rc80211_minstrel_init(); |
| 1125 | if (ret) |
| 1126 | return ret; |
| 1127 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 1128 | ret = rc80211_pid_init(); |
Mattias Nissler | ad01837 | 2007-12-19 01:25:57 +0100 | [diff] [blame] | 1129 | if (ret) |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 1130 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1131 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1132 | ieee80211_debugfs_netdev_init(); |
| 1133 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1134 | return 0; |
| 1135 | } |
| 1136 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1137 | static void __exit ieee80211_exit(void) |
| 1138 | { |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 1139 | rc80211_pid_exit(); |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 1140 | rc80211_minstrel_exit(); |
Johannes Berg | ac71c69 | 2007-10-28 14:17:44 +0100 | [diff] [blame] | 1141 | |
Johannes Berg | 3b96766 | 2008-04-08 17:56:52 +0200 | [diff] [blame] | 1142 | /* |
| 1143 | * For key todo, it'll be empty by now but the work |
| 1144 | * might still be scheduled. |
| 1145 | */ |
| 1146 | flush_scheduled_work(); |
| 1147 | |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 1148 | if (mesh_allocated) |
| 1149 | ieee80211s_stop(); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 1150 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1151 | ieee80211_debugfs_netdev_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1152 | } |
| 1153 | |
| 1154 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 1155 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1156 | module_exit(ieee80211_exit); |
| 1157 | |
| 1158 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 1159 | MODULE_LICENSE("GPL"); |