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 | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 157 | struct ieee80211_channel *chan; |
| 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 | |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 164 | if (local->sw_scanning) { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 165 | chan = local->scan_channel; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 166 | channel_type = NL80211_CHAN_NO_HT; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 167 | } else { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 168 | chan = local->oper_channel; |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 169 | channel_type = local->oper_channel_type; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 170 | } |
| 171 | |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 172 | if (chan != local->hw.conf.channel || |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 173 | channel_type != local->hw.conf.channel_type) { |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 174 | local->hw.conf.channel = chan; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 175 | local->hw.conf.channel_type = channel_type; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 176 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
| 177 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 178 | |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 179 | if (local->sw_scanning) |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 180 | power = chan->max_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 181 | else |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 182 | power = local->power_constr_level ? |
| 183 | (chan->max_power - local->power_constr_level) : |
| 184 | chan->max_power; |
| 185 | |
Johannes Berg | 47afbaf | 2009-04-07 15:22:28 +0200 | [diff] [blame] | 186 | if (local->user_power_level >= 0) |
Vasanthakumar Thiagarajan | a8302de | 2009-01-09 18:14:15 +0530 | [diff] [blame] | 187 | power = min(power, local->user_power_level); |
| 188 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 189 | if (local->hw.conf.power_level != power) { |
| 190 | changed |= IEEE80211_CONF_CHANGE_POWER; |
| 191 | local->hw.conf.power_level = power; |
| 192 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 193 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 194 | if (changed && local->open_count) { |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame^] | 195 | ret = drv_config(local, changed); |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 196 | /* |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 197 | * Goal: |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 198 | * HW reconfiguration should never fail, the driver has told |
| 199 | * 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] | 200 | * |
| 201 | * Current status: |
| 202 | * rfkill is not integrated with mac80211 and a |
| 203 | * configuration command can thus fail if hardware rfkill |
| 204 | * is enabled |
| 205 | * |
| 206 | * FIXME: integrate rfkill with mac80211 and then add this |
| 207 | * WARN_ON() back |
| 208 | * |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 209 | */ |
Reinette Chatre | 447107f | 2008-12-04 14:49:08 -0800 | [diff] [blame] | 210 | /* WARN_ON(ret); */ |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 211 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 212 | |
| 213 | return ret; |
| 214 | } |
| 215 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 216 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| 217 | u32 changed) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 218 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 219 | struct ieee80211_local *local = sdata->local; |
| 220 | |
| 221 | if (!changed) |
| 222 | return; |
| 223 | |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 224 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
| 225 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
| 226 | else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
| 227 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
| 228 | else if (sdata->vif.type == NL80211_IFTYPE_AP) |
| 229 | sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; |
| 230 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 231 | static const u8 zero[ETH_ALEN] = { 0 }; |
| 232 | sdata->vif.bss_conf.bssid = zero; |
| 233 | } else { |
| 234 | WARN_ON(1); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | switch (sdata->vif.type) { |
| 239 | case NL80211_IFTYPE_AP: |
| 240 | case NL80211_IFTYPE_ADHOC: |
| 241 | case NL80211_IFTYPE_MESH_POINT: |
| 242 | break; |
| 243 | default: |
| 244 | /* do not warn to simplify caller in scan.c */ |
| 245 | changed &= ~BSS_CHANGED_BEACON_ENABLED; |
| 246 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) |
| 247 | return; |
| 248 | break; |
| 249 | } |
| 250 | |
| 251 | if (changed & BSS_CHANGED_BEACON_ENABLED) { |
| 252 | if (local->sw_scanning) { |
| 253 | sdata->vif.bss_conf.enable_beacon = false; |
| 254 | } else { |
| 255 | /* |
| 256 | * Beacon should be enabled, but AP mode must |
| 257 | * check whether there is a beacon configured. |
| 258 | */ |
| 259 | switch (sdata->vif.type) { |
| 260 | case NL80211_IFTYPE_AP: |
| 261 | sdata->vif.bss_conf.enable_beacon = |
| 262 | !!rcu_dereference(sdata->u.ap.beacon); |
| 263 | break; |
| 264 | case NL80211_IFTYPE_ADHOC: |
| 265 | sdata->vif.bss_conf.enable_beacon = |
| 266 | !!rcu_dereference(sdata->u.ibss.presp); |
| 267 | break; |
| 268 | case NL80211_IFTYPE_MESH_POINT: |
| 269 | sdata->vif.bss_conf.enable_beacon = true; |
| 270 | break; |
| 271 | default: |
| 272 | /* not reached */ |
| 273 | WARN_ON(1); |
| 274 | break; |
| 275 | } |
| 276 | } |
| 277 | } |
| 278 | |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame^] | 279 | drv_bss_info_changed(local, &sdata->vif, |
| 280 | &sdata->vif.bss_conf, changed); |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 281 | |
| 282 | /* |
| 283 | * DEPRECATED |
| 284 | * |
| 285 | * ~changed is just there to not do this at resume time |
| 286 | */ |
| 287 | if (changed & BSS_CHANGED_BEACON_INT && ~changed) { |
| 288 | local->hw.conf.beacon_int = sdata->vif.bss_conf.beacon_int; |
| 289 | ieee80211_hw_config(local, |
| 290 | _IEEE80211_CONF_CHANGE_BEACON_INTERVAL); |
| 291 | } |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 292 | } |
| 293 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 294 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 295 | { |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 296 | sdata->vif.bss_conf.use_cts_prot = false; |
| 297 | sdata->vif.bss_conf.use_short_preamble = false; |
| 298 | sdata->vif.bss_conf.use_short_slot = false; |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 299 | return BSS_CHANGED_ERP_CTS_PROT | |
| 300 | BSS_CHANGED_ERP_PREAMBLE | |
| 301 | BSS_CHANGED_ERP_SLOT; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 302 | } |
| 303 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 304 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 305 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 306 | { |
| 307 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 308 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 309 | int tmp; |
| 310 | |
| 311 | skb->dev = local->mdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 312 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 313 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 314 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
| 315 | tmp = skb_queue_len(&local->skb_queue) + |
| 316 | skb_queue_len(&local->skb_queue_unreliable); |
| 317 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| 318 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 319 | dev_kfree_skb_irq(skb); |
| 320 | tmp--; |
| 321 | I802_DEBUG_INC(local->tx_status_drop); |
| 322 | } |
| 323 | tasklet_schedule(&local->tasklet); |
| 324 | } |
| 325 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| 326 | |
| 327 | static void ieee80211_tasklet_handler(unsigned long data) |
| 328 | { |
| 329 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 330 | struct sk_buff *skb; |
| 331 | struct ieee80211_rx_status rx_status; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 332 | struct ieee80211_ra_tid *ra_tid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 333 | |
| 334 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 335 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 336 | switch (skb->pkt_type) { |
| 337 | case IEEE80211_RX_MSG: |
| 338 | /* status is in skb->cb */ |
| 339 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 340 | /* Clear skb->pkt_type in order to not confuse kernel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 341 | * netstack. */ |
| 342 | skb->pkt_type = 0; |
| 343 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); |
| 344 | break; |
| 345 | case IEEE80211_TX_STATUS_MSG: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 346 | skb->pkt_type = 0; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 347 | ieee80211_tx_status(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 348 | break; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 349 | case IEEE80211_DELBA_MSG: |
| 350 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 351 | ieee80211_stop_tx_ba_cb(local_to_hw(local), |
| 352 | ra_tid->ra, ra_tid->tid); |
| 353 | dev_kfree_skb(skb); |
| 354 | break; |
| 355 | case IEEE80211_ADDBA_MSG: |
| 356 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 357 | ieee80211_start_tx_ba_cb(local_to_hw(local), |
| 358 | ra_tid->ra, ra_tid->tid); |
| 359 | dev_kfree_skb(skb); |
| 360 | break ; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 361 | default: |
Larry Finger | 5e3f308 | 2008-12-17 14:26:59 -0600 | [diff] [blame] | 362 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
| 363 | skb->pkt_type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 364 | dev_kfree_skb(skb); |
| 365 | break; |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 370 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
| 371 | * make a prepared TX frame (one that has been given to hw) to look like brand |
| 372 | * 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] | 373 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 374 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
| 375 | struct ieee80211_key *key, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 376 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 377 | { |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 378 | unsigned int hdrlen, iv_len, mic_len; |
| 379 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 380 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 381 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 382 | |
| 383 | if (!key) |
| 384 | goto no_key; |
| 385 | |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 386 | switch (key->conf.alg) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 387 | case ALG_WEP: |
| 388 | iv_len = WEP_IV_LEN; |
| 389 | mic_len = WEP_ICV_LEN; |
| 390 | break; |
| 391 | case ALG_TKIP: |
| 392 | iv_len = TKIP_IV_LEN; |
| 393 | mic_len = TKIP_ICV_LEN; |
| 394 | break; |
| 395 | case ALG_CCMP: |
| 396 | iv_len = CCMP_HDR_LEN; |
| 397 | mic_len = CCMP_MIC_LEN; |
| 398 | break; |
| 399 | default: |
| 400 | goto no_key; |
| 401 | } |
| 402 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 403 | if (skb->len >= hdrlen + mic_len && |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 404 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 405 | skb_trim(skb, skb->len - mic_len); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 406 | if (skb->len >= hdrlen + iv_len) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 407 | memmove(skb->data + iv_len, skb->data, hdrlen); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 408 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 409 | } |
| 410 | |
| 411 | no_key: |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 412 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
| 413 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); |
| 414 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, |
| 415 | hdrlen - IEEE80211_QOS_CTL_LEN); |
| 416 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 417 | } |
| 418 | } |
| 419 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 420 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
| 421 | struct sta_info *sta, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 422 | struct sk_buff *skb) |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 423 | { |
| 424 | sta->tx_filtered_count++; |
| 425 | |
| 426 | /* |
| 427 | * Clear the TX filter mask for this STA when sending the next |
| 428 | * packet. If the STA went to power save mode, this will happen |
Yi Zhu | f6d9710 | 2008-05-27 17:50:50 +0300 | [diff] [blame] | 429 | * when it wakes up for the next time. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 430 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 431 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 432 | |
| 433 | /* |
| 434 | * This code races in the following way: |
| 435 | * |
| 436 | * (1) STA sends frame indicating it will go to sleep and does so |
| 437 | * (2) hardware/firmware adds STA to filter list, passes frame up |
| 438 | * (3) hardware/firmware processes TX fifo and suppresses a frame |
| 439 | * (4) we get TX status before having processed the frame and |
| 440 | * knowing that the STA has gone to sleep. |
| 441 | * |
| 442 | * This is actually quite unlikely even when both those events are |
| 443 | * processed from interrupts coming in quickly after one another or |
| 444 | * even at the same time because we queue both TX status events and |
| 445 | * RX frames to be processed by a tasklet and process them in the |
| 446 | * same order that they were received or TX status last. Hence, there |
| 447 | * is no race as long as the frame RX is processed before the next TX |
| 448 | * status, which drivers can ensure, see below. |
| 449 | * |
| 450 | * Note that this can only happen if the hardware or firmware can |
| 451 | * actually add STAs to the filter list, if this is done by the |
| 452 | * driver in response to set_tim() (which will only reduce the race |
| 453 | * this whole filtering tries to solve, not completely solve it) |
| 454 | * this situation cannot happen. |
| 455 | * |
| 456 | * To completely solve this race drivers need to make sure that they |
| 457 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
| 458 | * functions and |
| 459 | * (b) always process RX events before TX status events if ordering |
| 460 | * can be unknown, for example with different interrupt status |
| 461 | * bits. |
| 462 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 463 | if (test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 464 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 465 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 466 | skb_queue_tail(&sta->tx_filtered, skb); |
| 467 | return; |
| 468 | } |
| 469 | |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 470 | if (!test_sta_flags(sta, WLAN_STA_PS) && !skb->requeue) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 471 | /* Software retry the packet once */ |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 472 | skb->requeue = 1; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 473 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 474 | dev_queue_xmit(skb); |
| 475 | return; |
| 476 | } |
| 477 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 478 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 479 | if (net_ratelimit()) |
| 480 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " |
| 481 | "queue_len=%d PS=%d @%lu\n", |
| 482 | wiphy_name(local->hw.wiphy), |
| 483 | skb_queue_len(&sta->tx_filtered), |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 484 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 485 | #endif |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 486 | dev_kfree_skb(skb); |
| 487 | } |
| 488 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 489 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 490 | { |
| 491 | struct sk_buff *skb2; |
| 492 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 493 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 494 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 495 | u16 frag, type; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 496 | __le16 fc; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 497 | struct ieee80211_supported_band *sband; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 498 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
| 499 | struct ieee80211_sub_if_data *sdata; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 500 | struct net_device *prev_dev = NULL; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 501 | struct sta_info *sta; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 502 | int retry_count = -1, i; |
| 503 | |
| 504 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { |
| 505 | /* the HW cannot have attempted that rate */ |
| 506 | if (i >= hw->max_rates) { |
| 507 | info->status.rates[i].idx = -1; |
| 508 | info->status.rates[i].count = 0; |
| 509 | } |
| 510 | |
| 511 | retry_count += info->status.rates[i].count; |
| 512 | } |
| 513 | if (retry_count < 0) |
| 514 | retry_count = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 515 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 516 | rcu_read_lock(); |
| 517 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 518 | sband = local->hw.wiphy->bands[info->band]; |
| 519 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 520 | sta = sta_info_get(local, hdr->addr1); |
| 521 | |
| 522 | if (sta) { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 523 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 524 | test_sta_flags(sta, WLAN_STA_PS)) { |
| 525 | /* |
| 526 | * The STA is in power save mode, so assume |
| 527 | * that this TX packet failed because of that. |
| 528 | */ |
| 529 | ieee80211_handle_filtered_frame(local, sta, skb); |
| 530 | rcu_read_unlock(); |
| 531 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 532 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 533 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 534 | fc = hdr->frame_control; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 535 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 536 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
| 537 | (ieee80211_is_data_qos(fc))) { |
| 538 | u16 tid, ssn; |
| 539 | u8 *qc; |
| 540 | |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 541 | qc = ieee80211_get_qos_ctl(hdr); |
| 542 | tid = qc[0] & 0xf; |
| 543 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
| 544 | & IEEE80211_SCTL_SEQ); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 545 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 546 | tid, ssn); |
| 547 | } |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 548 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 549 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 550 | ieee80211_handle_filtered_frame(local, sta, skb); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 551 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 552 | return; |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 553 | } else { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 554 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 555 | sta->tx_retry_failed++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 556 | sta->tx_retry_count += retry_count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 557 | } |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 558 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 559 | rate_control_tx_status(local, sband, sta, skb); |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 560 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 561 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 562 | rcu_read_unlock(); |
| 563 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 564 | ieee80211_led_tx(local, 0); |
| 565 | |
| 566 | /* SNMP counters |
| 567 | * Fragments are passed to low-level drivers as separate skbs, so these |
| 568 | * are actually fragments, not frames. Update frame counters only for |
| 569 | * the first fragment of the frame. */ |
| 570 | |
| 571 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
| 572 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; |
| 573 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 574 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 575 | if (frag == 0) { |
| 576 | local->dot11TransmittedFrameCount++; |
| 577 | if (is_multicast_ether_addr(hdr->addr1)) |
| 578 | local->dot11MulticastTransmittedFrameCount++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 579 | if (retry_count > 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 580 | local->dot11RetryCount++; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 581 | if (retry_count > 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 582 | local->dot11MultipleRetryCount++; |
| 583 | } |
| 584 | |
| 585 | /* This counter shall be incremented for an acknowledged MPDU |
| 586 | * with an individual address in the address 1 field or an MPDU |
| 587 | * with a multicast address in the address 1 field of type Data |
| 588 | * or Management. */ |
| 589 | if (!is_multicast_ether_addr(hdr->addr1) || |
| 590 | type == IEEE80211_FTYPE_DATA || |
| 591 | type == IEEE80211_FTYPE_MGMT) |
| 592 | local->dot11TransmittedFragmentCount++; |
| 593 | } else { |
| 594 | if (frag == 0) |
| 595 | local->dot11FailedCount++; |
| 596 | } |
| 597 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 598 | /* this was a transmitted frame, but now we want to reuse it */ |
| 599 | skb_orphan(skb); |
| 600 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 601 | /* |
| 602 | * This is a bit racy but we can avoid a lot of work |
| 603 | * with this test... |
| 604 | */ |
| 605 | if (!local->monitors && !local->cooked_mntrs) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 606 | dev_kfree_skb(skb); |
| 607 | return; |
| 608 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 609 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 610 | /* send frame to monitor interfaces now */ |
| 611 | |
| 612 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
| 613 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); |
| 614 | dev_kfree_skb(skb); |
| 615 | return; |
| 616 | } |
| 617 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 618 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 619 | skb_push(skb, sizeof(*rthdr)); |
| 620 | |
| 621 | memset(rthdr, 0, sizeof(*rthdr)); |
| 622 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); |
| 623 | rthdr->hdr.it_present = |
| 624 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 625 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
| 626 | (1 << IEEE80211_RADIOTAP_RATE)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 627 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 628 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 629 | !is_multicast_ether_addr(hdr->addr1)) |
| 630 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); |
| 631 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 632 | /* |
| 633 | * XXX: Once radiotap gets the bitmap reset thing the vendor |
| 634 | * extensions proposal contains, we can actually report |
| 635 | * the whole set of tries we did. |
| 636 | */ |
| 637 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || |
| 638 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 639 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 640 | 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] | 641 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 642 | if (info->status.rates[0].idx >= 0 && |
| 643 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) |
| 644 | rthdr->rate = sband->bitrates[ |
| 645 | info->status.rates[0].idx].bitrate / 5; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 646 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 647 | /* for now report the total retry_count */ |
| 648 | rthdr->data_retries = retry_count; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 649 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 650 | /* XXX: is this sufficient for BPF? */ |
| 651 | skb_set_mac_header(skb, 0); |
| 652 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 653 | skb->pkt_type = PACKET_OTHERHOST; |
| 654 | skb->protocol = htons(ETH_P_802_2); |
| 655 | memset(skb->cb, 0, sizeof(skb->cb)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 656 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 657 | rcu_read_lock(); |
| 658 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 659 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 660 | if (!netif_running(sdata->dev)) |
| 661 | continue; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 662 | |
| 663 | if (prev_dev) { |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 664 | skb2 = skb_clone(skb, GFP_ATOMIC); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 665 | if (skb2) { |
| 666 | skb2->dev = prev_dev; |
| 667 | netif_rx(skb2); |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | prev_dev = sdata->dev; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 672 | } |
| 673 | } |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 674 | if (prev_dev) { |
| 675 | skb->dev = prev_dev; |
| 676 | netif_rx(skb); |
| 677 | skb = NULL; |
| 678 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 679 | rcu_read_unlock(); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 680 | dev_kfree_skb(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 681 | } |
| 682 | EXPORT_SYMBOL(ieee80211_tx_status); |
| 683 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 684 | static void ieee80211_restart_work(struct work_struct *work) |
| 685 | { |
| 686 | struct ieee80211_local *local = |
| 687 | container_of(work, struct ieee80211_local, restart_work); |
| 688 | |
| 689 | rtnl_lock(); |
| 690 | ieee80211_reconfig(local); |
| 691 | rtnl_unlock(); |
| 692 | } |
| 693 | |
| 694 | void ieee80211_restart_hw(struct ieee80211_hw *hw) |
| 695 | { |
| 696 | struct ieee80211_local *local = hw_to_local(hw); |
| 697 | |
| 698 | /* use this reason, __ieee80211_resume will unblock it */ |
| 699 | ieee80211_stop_queues_by_reason(hw, |
| 700 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| 701 | |
| 702 | schedule_work(&local->restart_work); |
| 703 | } |
| 704 | EXPORT_SYMBOL(ieee80211_restart_hw); |
| 705 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 706 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 707 | const struct ieee80211_ops *ops) |
| 708 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 709 | struct ieee80211_local *local; |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 710 | int priv_size, i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 711 | struct wiphy *wiphy; |
| 712 | |
| 713 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 714 | * We use the wiphy priv data for both our ieee80211_local and for |
| 715 | * the driver's private data |
| 716 | * |
| 717 | * In memory it'll be like this: |
| 718 | * |
| 719 | * +-------------------------+ |
| 720 | * | struct wiphy | |
| 721 | * +-------------------------+ |
| 722 | * | struct ieee80211_local | |
| 723 | * +-------------------------+ |
| 724 | * | driver's private data | |
| 725 | * +-------------------------+ |
| 726 | * |
| 727 | */ |
| 728 | priv_size = ((sizeof(struct ieee80211_local) + |
| 729 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + |
| 730 | priv_data_len; |
| 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 | |
| 747 | local->hw.priv = (char *)local + |
| 748 | ((sizeof(struct ieee80211_local) + |
| 749 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); |
| 750 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 751 | BUG_ON(!ops->tx); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 752 | BUG_ON(!ops->start); |
| 753 | BUG_ON(!ops->stop); |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 754 | BUG_ON(!ops->config); |
| 755 | BUG_ON(!ops->add_interface); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 756 | BUG_ON(!ops->remove_interface); |
| 757 | BUG_ON(!ops->configure_filter); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 758 | local->ops = ops; |
| 759 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 760 | /* set up some defaults */ |
| 761 | local->hw.queues = 1; |
| 762 | local->hw.max_rates = 1; |
Jouni Malinen | b9a5f8ca | 2009-04-20 18:39:05 +0200 | [diff] [blame] | 763 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
| 764 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 765 | local->hw.conf.radio_enabled = true; |
Johannes Berg | c428c89 | 2009-04-29 00:28:18 +0200 | [diff] [blame] | 766 | local->user_power_level = -1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 767 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 768 | INIT_LIST_HEAD(&local->interfaces); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 769 | mutex_init(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 770 | mutex_init(&local->scan_mtx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 771 | |
Johannes Berg | b16bd15 | 2008-04-11 21:40:35 +0200 | [diff] [blame] | 772 | spin_lock_init(&local->key_lock); |
| 773 | |
Kalle Valo | ce7c911 | 2008-12-18 23:35:20 +0200 | [diff] [blame] | 774 | spin_lock_init(&local->queue_stop_reason_lock); |
| 775 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 776 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 777 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 778 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
| 779 | |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 780 | INIT_WORK(&local->dynamic_ps_enable_work, |
| 781 | ieee80211_dynamic_ps_enable_work); |
| 782 | INIT_WORK(&local->dynamic_ps_disable_work, |
| 783 | ieee80211_dynamic_ps_disable_work); |
| 784 | setup_timer(&local->dynamic_ps_timer, |
| 785 | ieee80211_dynamic_ps_timer, (unsigned long) local); |
| 786 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 787 | sta_info_init(local); |
| 788 | |
Johannes Berg | 2a577d9 | 2009-03-23 17:28:37 +0100 | [diff] [blame] | 789 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
| 790 | skb_queue_head_init(&local->pending[i]); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 791 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 792 | (unsigned long)local); |
| 793 | tasklet_disable(&local->tx_pending_tasklet); |
| 794 | |
| 795 | tasklet_init(&local->tasklet, |
| 796 | ieee80211_tasklet_handler, |
| 797 | (unsigned long) local); |
| 798 | tasklet_disable(&local->tasklet); |
| 799 | |
| 800 | skb_queue_head_init(&local->skb_queue); |
| 801 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 802 | |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 803 | spin_lock_init(&local->ampdu_lock); |
| 804 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 805 | return local_to_hw(local); |
| 806 | } |
| 807 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 808 | |
Johannes Berg | 7230645 | 2009-01-30 13:36:25 +0100 | [diff] [blame] | 809 | static const struct net_device_ops ieee80211_master_ops = { |
| 810 | .ndo_start_xmit = ieee80211_master_start_xmit, |
| 811 | .ndo_open = ieee80211_master_open, |
| 812 | .ndo_stop = ieee80211_master_stop, |
| 813 | .ndo_set_multicast_list = ieee80211_master_set_multicast_list, |
| 814 | .ndo_select_queue = ieee80211_select_queue, |
| 815 | }; |
| 816 | |
| 817 | static void ieee80211_master_setup(struct net_device *mdev) |
| 818 | { |
| 819 | mdev->type = ARPHRD_IEEE80211; |
| 820 | mdev->netdev_ops = &ieee80211_master_ops; |
| 821 | mdev->header_ops = &ieee80211_header_ops; |
| 822 | mdev->tx_queue_len = 1000; |
| 823 | mdev->addr_len = ETH_ALEN; |
| 824 | } |
| 825 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 826 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 827 | { |
| 828 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 829 | int result; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 830 | enum ieee80211_band band; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 831 | struct net_device *mdev; |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 832 | struct ieee80211_master_priv *mpriv; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 833 | int channels, i, j, max_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 834 | bool supp_ht; |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 835 | static const u32 cipher_suites[] = { |
| 836 | WLAN_CIPHER_SUITE_WEP40, |
| 837 | WLAN_CIPHER_SUITE_WEP104, |
| 838 | WLAN_CIPHER_SUITE_TKIP, |
| 839 | WLAN_CIPHER_SUITE_CCMP, |
| 840 | |
| 841 | /* keep last -- depends on hw flags! */ |
| 842 | WLAN_CIPHER_SUITE_AES_CMAC |
| 843 | }; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 844 | |
| 845 | /* |
| 846 | * generic code guarantees at least one band, |
| 847 | * set this very early because much code assumes |
| 848 | * that hw.conf.channel is assigned |
| 849 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 850 | channels = 0; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 851 | max_bitrates = 0; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 852 | supp_ht = false; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 853 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 854 | struct ieee80211_supported_band *sband; |
| 855 | |
| 856 | sband = local->hw.wiphy->bands[band]; |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 857 | if (!sband) |
| 858 | continue; |
| 859 | if (!local->oper_channel) { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 860 | /* init channel we're on */ |
| 861 | local->hw.conf.channel = |
| 862 | local->oper_channel = |
| 863 | local->scan_channel = &sband->channels[0]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 864 | } |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 865 | channels += sband->n_channels; |
| 866 | |
| 867 | if (max_bitrates < sband->n_bitrates) |
| 868 | max_bitrates = sband->n_bitrates; |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 869 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 870 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 871 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 872 | local->int_scan_req.n_channels = channels; |
| 873 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); |
| 874 | if (!local->int_scan_req.channels) |
| 875 | return -ENOMEM; |
| 876 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 877 | /* if low-level driver supports AP, we also support VLAN */ |
| 878 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) |
| 879 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| 880 | |
| 881 | /* mac80211 always supports monitor */ |
| 882 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| 883 | |
Johannes Berg | 77965c9 | 2009-02-18 18:45:06 +0100 | [diff] [blame] | 884 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
| 885 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
| 886 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) |
| 887 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
| 888 | |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 889 | /* |
| 890 | * Calculate scan IE length -- we need this to alloc |
| 891 | * memory and to subtract from the driver limit. It |
| 892 | * includes the (extended) supported rates and HT |
| 893 | * information -- SSID is the driver's responsibility. |
| 894 | */ |
| 895 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ |
Johannes Berg | 5ef2d41 | 2009-03-31 12:12:07 +0200 | [diff] [blame] | 896 | if (supp_ht) |
| 897 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 898 | |
| 899 | if (!local->ops->hw_scan) { |
| 900 | /* For hw_scan, driver needs to set these up. */ |
| 901 | local->hw.wiphy->max_scan_ssids = 4; |
| 902 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; |
| 903 | } |
| 904 | |
| 905 | /* |
| 906 | * If the driver supports any scan IEs, then assume the |
| 907 | * limit includes the IEs mac80211 will add, otherwise |
| 908 | * leave it at zero and let the driver sort it out; we |
| 909 | * still pass our IEs to the driver but userspace will |
| 910 | * not be allowed to in that case. |
| 911 | */ |
| 912 | if (local->hw.wiphy->max_scan_ie_len) |
| 913 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; |
| 914 | |
Johannes Berg | 25e47c1 | 2009-04-02 20:14:06 +0200 | [diff] [blame] | 915 | local->hw.wiphy->cipher_suites = cipher_suites; |
| 916 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); |
| 917 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) |
| 918 | local->hw.wiphy->n_cipher_suites--; |
| 919 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 920 | result = wiphy_register(local->hw.wiphy); |
| 921 | if (result < 0) |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 922 | goto fail_wiphy_register; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 923 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 924 | /* |
| 925 | * We use the number of queues for feature tests (QoS, HT) internally |
| 926 | * so restrict them appropriately. |
| 927 | */ |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 928 | if (hw->queues > IEEE80211_MAX_QUEUES) |
| 929 | hw->queues = IEEE80211_MAX_QUEUES; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 930 | |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 931 | mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), |
Johannes Berg | 7230645 | 2009-01-30 13:36:25 +0100 | [diff] [blame] | 932 | "wmaster%d", ieee80211_master_setup, |
Johannes Berg | 96f5e66 | 2009-02-12 00:51:53 +0100 | [diff] [blame] | 933 | hw->queues); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 934 | if (!mdev) |
| 935 | goto fail_mdev_alloc; |
| 936 | |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 937 | mpriv = netdev_priv(mdev); |
| 938 | mpriv->local = local; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 939 | local->mdev = mdev; |
| 940 | |
Luis R. Rodriguez | 4ada424 | 2008-11-14 14:44:22 -0800 | [diff] [blame] | 941 | local->hw.workqueue = |
Bob Copeland | 30d3ef4 | 2009-01-23 23:09:35 -0500 | [diff] [blame] | 942 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 943 | if (!local->hw.workqueue) { |
| 944 | result = -ENOMEM; |
| 945 | goto fail_workqueue; |
| 946 | } |
| 947 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 948 | /* |
| 949 | * The hardware needs headroom for sending the frame, |
| 950 | * and we need some headroom for passing the frame to monitor |
| 951 | * interfaces, but never both at the same time. |
| 952 | */ |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 953 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 954 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 955 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 956 | debugfs_hw_add(local); |
| 957 | |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 958 | if (local->hw.max_listen_interval == 0) |
| 959 | local->hw.max_listen_interval = 1; |
| 960 | |
| 961 | local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| 962 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 963 | result = sta_info_start(local); |
| 964 | if (result < 0) |
| 965 | goto fail_sta_info; |
| 966 | |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 967 | result = ieee80211_wep_init(local); |
| 968 | if (result < 0) { |
| 969 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
| 970 | wiphy_name(local->hw.wiphy), result); |
| 971 | goto fail_wep; |
| 972 | } |
| 973 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 974 | rtnl_lock(); |
| 975 | result = dev_alloc_name(local->mdev, local->mdev->name); |
| 976 | if (result < 0) |
| 977 | goto fail_dev; |
| 978 | |
| 979 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
| 980 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); |
Johannes Berg | 076ae60 | 2009-02-11 20:27:30 +0100 | [diff] [blame] | 981 | local->mdev->features |= NETIF_F_NETNS_LOCAL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 982 | |
| 983 | result = register_netdevice(local->mdev); |
| 984 | if (result < 0) |
| 985 | goto fail_dev; |
| 986 | |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 987 | result = ieee80211_init_rate_ctrl_alg(local, |
| 988 | hw->rate_control_algorithm); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 989 | if (result < 0) { |
| 990 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 991 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 992 | goto fail_rate; |
| 993 | } |
| 994 | |
Johannes Berg | 8dffff2 | 2008-12-09 00:10:30 +0100 | [diff] [blame] | 995 | /* add one default STA interface if supported */ |
| 996 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { |
| 997 | result = ieee80211_if_add(local, "wlan%d", NULL, |
| 998 | NL80211_IFTYPE_STATION, NULL); |
| 999 | if (result) |
| 1000 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
| 1001 | wiphy_name(local->hw.wiphy)); |
| 1002 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1003 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1004 | rtnl_unlock(); |
| 1005 | |
| 1006 | ieee80211_led_init(local); |
| 1007 | |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1008 | /* alloc internal scan request */ |
| 1009 | i = 0; |
| 1010 | local->int_scan_req.ssids = &local->scan_ssid; |
| 1011 | local->int_scan_req.n_ssids = 1; |
| 1012 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 1013 | if (!hw->wiphy->bands[band]) |
| 1014 | continue; |
| 1015 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { |
| 1016 | local->int_scan_req.channels[i] = |
| 1017 | &hw->wiphy->bands[band]->channels[j]; |
| 1018 | i++; |
| 1019 | } |
| 1020 | } |
| 1021 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1022 | local->network_latency_notifier.notifier_call = |
| 1023 | ieee80211_max_network_latency; |
| 1024 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, |
| 1025 | &local->network_latency_notifier); |
| 1026 | |
| 1027 | if (result) { |
| 1028 | rtnl_lock(); |
| 1029 | goto fail_pm_qos; |
| 1030 | } |
| 1031 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1032 | return 0; |
| 1033 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1034 | fail_pm_qos: |
| 1035 | ieee80211_led_exit(local); |
| 1036 | ieee80211_remove_interfaces(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1037 | fail_rate: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1038 | unregister_netdevice(local->mdev); |
Pavel Emelyanov | 339a7c4 | 2008-05-04 17:59:30 -0700 | [diff] [blame] | 1039 | local->mdev = NULL; |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1040 | fail_dev: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1041 | rtnl_unlock(); |
Alan Jenkins | d4c4a9a | 2009-04-29 11:41:24 +0100 | [diff] [blame] | 1042 | ieee80211_wep_free(local); |
David S. Miller | aba7453 | 2009-04-29 20:30:35 -0700 | [diff] [blame] | 1043 | fail_wep: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1044 | sta_info_stop(local); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1045 | fail_sta_info: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1046 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1047 | destroy_workqueue(local->hw.workqueue); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1048 | fail_workqueue: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1049 | if (local->mdev) |
| 1050 | free_netdev(local->mdev); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1051 | fail_mdev_alloc: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1052 | wiphy_unregister(local->hw.wiphy); |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1053 | fail_wiphy_register: |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1054 | kfree(local->int_scan_req.channels); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1055 | return result; |
| 1056 | } |
| 1057 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 1058 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1059 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 1060 | { |
| 1061 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1062 | |
| 1063 | tasklet_kill(&local->tx_pending_tasklet); |
| 1064 | tasklet_kill(&local->tasklet); |
| 1065 | |
Johannes Berg | 10f644a | 2009-04-16 13:17:25 +0200 | [diff] [blame] | 1066 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
| 1067 | &local->network_latency_notifier); |
| 1068 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1069 | rtnl_lock(); |
| 1070 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1071 | /* |
| 1072 | * At this point, interface list manipulations are fine |
| 1073 | * because the driver cannot be handing us frames any |
| 1074 | * more and the tasklet is killed. |
| 1075 | */ |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 1076 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1077 | /* First, we remove all virtual interfaces. */ |
| 1078 | ieee80211_remove_interfaces(local); |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 1079 | |
| 1080 | /* then, finally, remove the master interface */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1081 | unregister_netdevice(local->mdev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1082 | |
| 1083 | rtnl_unlock(); |
| 1084 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1085 | ieee80211_clear_tx_pending(local); |
| 1086 | sta_info_stop(local); |
| 1087 | rate_control_deinitialize(local); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1088 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1089 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1090 | if (skb_queue_len(&local->skb_queue) |
| 1091 | || skb_queue_len(&local->skb_queue_unreliable)) |
| 1092 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1093 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1094 | skb_queue_purge(&local->skb_queue); |
| 1095 | skb_queue_purge(&local->skb_queue_unreliable); |
| 1096 | |
| 1097 | destroy_workqueue(local->hw.workqueue); |
| 1098 | wiphy_unregister(local->hw.wiphy); |
| 1099 | ieee80211_wep_free(local); |
| 1100 | ieee80211_led_exit(local); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1101 | free_netdev(local->mdev); |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1102 | kfree(local->int_scan_req.channels); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1103 | } |
| 1104 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 1105 | |
| 1106 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 1107 | { |
| 1108 | struct ieee80211_local *local = hw_to_local(hw); |
| 1109 | |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1110 | mutex_destroy(&local->iflist_mtx); |
Johannes Berg | f3b8525 | 2009-04-23 16:01:47 +0200 | [diff] [blame] | 1111 | mutex_destroy(&local->scan_mtx); |
Johannes Berg | c771c9d | 2009-01-23 22:54:03 +0100 | [diff] [blame] | 1112 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1113 | wiphy_free(local->hw.wiphy); |
| 1114 | } |
| 1115 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 1116 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1117 | static int __init ieee80211_init(void) |
| 1118 | { |
| 1119 | struct sk_buff *skb; |
| 1120 | int ret; |
| 1121 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1122 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| 1123 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
Johannes Berg | c6a1fa1 | 2008-10-07 12:04:32 +0200 | [diff] [blame] | 1124 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1125 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 1126 | ret = rc80211_minstrel_init(); |
| 1127 | if (ret) |
| 1128 | return ret; |
| 1129 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 1130 | ret = rc80211_pid_init(); |
Mattias Nissler | ad01837 | 2007-12-19 01:25:57 +0100 | [diff] [blame] | 1131 | if (ret) |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 1132 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1133 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1134 | ieee80211_debugfs_netdev_init(); |
| 1135 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1136 | return 0; |
| 1137 | } |
| 1138 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1139 | static void __exit ieee80211_exit(void) |
| 1140 | { |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 1141 | rc80211_pid_exit(); |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 1142 | rc80211_minstrel_exit(); |
Johannes Berg | ac71c69 | 2007-10-28 14:17:44 +0100 | [diff] [blame] | 1143 | |
Johannes Berg | 3b96766 | 2008-04-08 17:56:52 +0200 | [diff] [blame] | 1144 | /* |
| 1145 | * For key todo, it'll be empty by now but the work |
| 1146 | * might still be scheduled. |
| 1147 | */ |
| 1148 | flush_scheduled_work(); |
| 1149 | |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 1150 | if (mesh_allocated) |
| 1151 | ieee80211s_stop(); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 1152 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1153 | ieee80211_debugfs_netdev_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 1157 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1158 | module_exit(ieee80211_exit); |
| 1159 | |
| 1160 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 1161 | MODULE_LICENSE("GPL"); |