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> |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 24 | #include <net/net_namespace.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 25 | #include <net/cfg80211.h> |
| 26 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 27 | #include "ieee80211_i.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 28 | #include "rate.h" |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 29 | #include "mesh.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 30 | #include "wep.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 31 | #include "wme.h" |
| 32 | #include "aes_ccm.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 33 | #include "led.h" |
Michael Wu | e0eb685 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 34 | #include "cfg.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 35 | #include "debugfs.h" |
| 36 | #include "debugfs_netdev.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 37 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 38 | /* |
| 39 | * For seeing transmitted packets on monitor interfaces |
| 40 | * we have a radiotap header too. |
| 41 | */ |
| 42 | struct ieee80211_tx_status_rtap_hdr { |
| 43 | struct ieee80211_radiotap_header hdr; |
| 44 | __le16 tx_flags; |
| 45 | u8 data_retries; |
| 46 | } __attribute__ ((packed)); |
| 47 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 48 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 49 | /* must be called under mdev tx lock */ |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 50 | void ieee80211_configure_filter(struct ieee80211_local *local) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 51 | { |
| 52 | unsigned int changed_flags; |
| 53 | unsigned int new_flags = 0; |
| 54 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 55 | if (atomic_read(&local->iff_promiscs)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 56 | new_flags |= FIF_PROMISC_IN_BSS; |
| 57 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 58 | if (atomic_read(&local->iff_allmultis)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 59 | new_flags |= FIF_ALLMULTI; |
| 60 | |
| 61 | if (local->monitors) |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 62 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
| 63 | |
| 64 | if (local->fif_fcsfail) |
| 65 | new_flags |= FIF_FCSFAIL; |
| 66 | |
| 67 | if (local->fif_plcpfail) |
| 68 | new_flags |= FIF_PLCPFAIL; |
| 69 | |
| 70 | if (local->fif_control) |
| 71 | new_flags |= FIF_CONTROL; |
| 72 | |
| 73 | if (local->fif_other_bss) |
| 74 | new_flags |= FIF_OTHER_BSS; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 75 | |
| 76 | changed_flags = local->filter_flags ^ new_flags; |
| 77 | |
| 78 | /* be a bit nasty */ |
| 79 | new_flags |= (1<<31); |
| 80 | |
| 81 | local->ops->configure_filter(local_to_hw(local), |
| 82 | changed_flags, &new_flags, |
| 83 | local->mdev->mc_count, |
| 84 | local->mdev->mc_list); |
| 85 | |
| 86 | WARN_ON(new_flags & (1<<31)); |
| 87 | |
| 88 | local->filter_flags = new_flags & ~(1<<31); |
| 89 | } |
| 90 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 91 | /* master interface */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 92 | |
Johannes Berg | 0d143fe | 2008-09-11 00:01:59 +0200 | [diff] [blame] | 93 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
| 94 | { |
| 95 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ |
| 96 | return ETH_ALEN; |
| 97 | } |
| 98 | |
| 99 | static const struct header_ops ieee80211_header_ops = { |
| 100 | .create = eth_header, |
| 101 | .parse = header_parse_80211, |
| 102 | .rebuild = eth_rebuild_header, |
| 103 | .cache = eth_header_cache, |
| 104 | .cache_update = eth_header_cache_update, |
| 105 | }; |
| 106 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 107 | static int ieee80211_master_open(struct net_device *dev) |
| 108 | { |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 109 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
| 110 | struct ieee80211_local *local = mpriv->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 111 | struct ieee80211_sub_if_data *sdata; |
| 112 | int res = -EOPNOTSUPP; |
| 113 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 114 | /* we hold the RTNL here so can safely walk the list */ |
| 115 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 116 | if (netif_running(sdata->dev)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 117 | res = 0; |
| 118 | break; |
| 119 | } |
| 120 | } |
Johannes Berg | 36d6825 | 2008-05-15 12:55:26 +0200 | [diff] [blame] | 121 | |
| 122 | if (res) |
| 123 | return res; |
| 124 | |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 125 | netif_tx_start_all_queues(local->mdev); |
Johannes Berg | 36d6825 | 2008-05-15 12:55:26 +0200 | [diff] [blame] | 126 | |
| 127 | return 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | static int ieee80211_master_stop(struct net_device *dev) |
| 131 | { |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 132 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
| 133 | struct ieee80211_local *local = mpriv->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 134 | struct ieee80211_sub_if_data *sdata; |
| 135 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 136 | /* we hold the RTNL here so can safely walk the list */ |
| 137 | list_for_each_entry(sdata, &local->interfaces, list) |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 138 | if (netif_running(sdata->dev)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 139 | dev_close(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 140 | |
| 141 | return 0; |
| 142 | } |
| 143 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 144 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
| 145 | { |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 146 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
| 147 | struct ieee80211_local *local = mpriv->local; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 148 | |
| 149 | ieee80211_configure_filter(local); |
| 150 | } |
| 151 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 152 | /* everything else */ |
| 153 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 154 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 155 | { |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 156 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 157 | struct ieee80211_if_conf conf; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 158 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 159 | if (WARN_ON(!netif_running(sdata->dev))) |
| 160 | return 0; |
| 161 | |
Johannes Berg | 7a725f7 | 2008-09-11 00:02:00 +0200 | [diff] [blame] | 162 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
| 163 | return -EINVAL; |
| 164 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 165 | if (!local->ops->config_interface) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 166 | return 0; |
| 167 | |
| 168 | memset(&conf, 0, sizeof(conf)); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 169 | conf.changed = changed; |
| 170 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 171 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
| 172 | sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 173 | conf.bssid = sdata->u.sta.bssid; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 174 | conf.ssid = sdata->u.sta.ssid; |
| 175 | conf.ssid_len = sdata->u.sta.ssid_len; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 176 | } else if (sdata->vif.type == NL80211_IFTYPE_AP) { |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 177 | conf.bssid = sdata->dev->dev_addr; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 178 | conf.ssid = sdata->u.ap.ssid; |
| 179 | conf.ssid_len = sdata->u.ap.ssid_len; |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 180 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 181 | u8 zero[ETH_ALEN] = { 0 }; |
| 182 | conf.bssid = zero; |
| 183 | conf.ssid = zero; |
| 184 | conf.ssid_len = 0; |
| 185 | } else { |
| 186 | WARN_ON(1); |
| 187 | return -EINVAL; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 188 | } |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 189 | |
| 190 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
| 191 | return -EINVAL; |
| 192 | |
| 193 | if (WARN_ON(!conf.ssid && (changed & IEEE80211_IFCC_SSID))) |
| 194 | return -EINVAL; |
| 195 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 196 | return local->ops->config_interface(local_to_hw(local), |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 197 | &sdata->vif, &conf); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 198 | } |
| 199 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 200 | int ieee80211_hw_config(struct ieee80211_local *local) |
| 201 | { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 202 | struct ieee80211_channel *chan; |
| 203 | int ret = 0; |
| 204 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 205 | if (local->sw_scanning) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 206 | chan = local->scan_channel; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 207 | else |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 208 | chan = local->oper_channel; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 209 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 210 | local->hw.conf.channel = chan; |
| 211 | |
| 212 | if (!local->hw.conf.power_level) |
| 213 | local->hw.conf.power_level = chan->max_power; |
| 214 | else |
| 215 | local->hw.conf.power_level = min(chan->max_power, |
| 216 | local->hw.conf.power_level); |
| 217 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 218 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 219 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
| 220 | wiphy_name(local->hw.wiphy), chan->center_freq); |
| 221 | #endif |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 222 | |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 223 | if (local->open_count) { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 224 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
Johannes Berg | d73782f | 2008-10-07 12:04:34 +0200 | [diff] [blame] | 225 | /* |
| 226 | * HW reconfiguration should never fail, the driver has told |
| 227 | * us what it can support so it should live up to that promise. |
| 228 | */ |
| 229 | WARN_ON(ret); |
| 230 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 231 | |
| 232 | return ret; |
| 233 | } |
| 234 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 235 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| 236 | u32 changed) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 237 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 238 | struct ieee80211_local *local = sdata->local; |
| 239 | |
Johannes Berg | 7a725f7 | 2008-09-11 00:02:00 +0200 | [diff] [blame] | 240 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
| 241 | return; |
| 242 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 243 | if (!changed) |
| 244 | return; |
| 245 | |
| 246 | if (local->ops->bss_info_changed) |
| 247 | local->ops->bss_info_changed(local_to_hw(local), |
| 248 | &sdata->vif, |
| 249 | &sdata->bss_conf, |
| 250 | changed); |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 251 | } |
| 252 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 253 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 254 | { |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 255 | sdata->bss_conf.use_cts_prot = false; |
| 256 | sdata->bss_conf.use_short_preamble = false; |
| 257 | sdata->bss_conf.use_short_slot = false; |
| 258 | return BSS_CHANGED_ERP_CTS_PROT | |
| 259 | BSS_CHANGED_ERP_PREAMBLE | |
| 260 | BSS_CHANGED_ERP_SLOT; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 261 | } |
| 262 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 263 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 264 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 265 | { |
| 266 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 267 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 268 | int tmp; |
| 269 | |
| 270 | skb->dev = local->mdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 271 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 272 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 273 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
| 274 | tmp = skb_queue_len(&local->skb_queue) + |
| 275 | skb_queue_len(&local->skb_queue_unreliable); |
| 276 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| 277 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 278 | dev_kfree_skb_irq(skb); |
| 279 | tmp--; |
| 280 | I802_DEBUG_INC(local->tx_status_drop); |
| 281 | } |
| 282 | tasklet_schedule(&local->tasklet); |
| 283 | } |
| 284 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| 285 | |
| 286 | static void ieee80211_tasklet_handler(unsigned long data) |
| 287 | { |
| 288 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 289 | struct sk_buff *skb; |
| 290 | struct ieee80211_rx_status rx_status; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 291 | struct ieee80211_ra_tid *ra_tid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 292 | |
| 293 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 294 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 295 | switch (skb->pkt_type) { |
| 296 | case IEEE80211_RX_MSG: |
| 297 | /* status is in skb->cb */ |
| 298 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 299 | /* Clear skb->pkt_type in order to not confuse kernel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 300 | * netstack. */ |
| 301 | skb->pkt_type = 0; |
| 302 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); |
| 303 | break; |
| 304 | case IEEE80211_TX_STATUS_MSG: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 305 | skb->pkt_type = 0; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 306 | ieee80211_tx_status(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 307 | break; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 308 | case IEEE80211_DELBA_MSG: |
| 309 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 310 | ieee80211_stop_tx_ba_cb(local_to_hw(local), |
| 311 | ra_tid->ra, ra_tid->tid); |
| 312 | dev_kfree_skb(skb); |
| 313 | break; |
| 314 | case IEEE80211_ADDBA_MSG: |
| 315 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 316 | ieee80211_start_tx_ba_cb(local_to_hw(local), |
| 317 | ra_tid->ra, ra_tid->tid); |
| 318 | dev_kfree_skb(skb); |
| 319 | break ; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 320 | default: |
| 321 | WARN_ON(1); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 322 | dev_kfree_skb(skb); |
| 323 | break; |
| 324 | } |
| 325 | } |
| 326 | } |
| 327 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 328 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
| 329 | * make a prepared TX frame (one that has been given to hw) to look like brand |
| 330 | * 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] | 331 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 332 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
| 333 | struct ieee80211_key *key, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 334 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 335 | { |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 336 | unsigned int hdrlen, iv_len, mic_len; |
| 337 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 338 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 339 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 340 | |
| 341 | if (!key) |
| 342 | goto no_key; |
| 343 | |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 344 | switch (key->conf.alg) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 345 | case ALG_WEP: |
| 346 | iv_len = WEP_IV_LEN; |
| 347 | mic_len = WEP_ICV_LEN; |
| 348 | break; |
| 349 | case ALG_TKIP: |
| 350 | iv_len = TKIP_IV_LEN; |
| 351 | mic_len = TKIP_ICV_LEN; |
| 352 | break; |
| 353 | case ALG_CCMP: |
| 354 | iv_len = CCMP_HDR_LEN; |
| 355 | mic_len = CCMP_MIC_LEN; |
| 356 | break; |
| 357 | default: |
| 358 | goto no_key; |
| 359 | } |
| 360 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 361 | if (skb->len >= hdrlen + mic_len && |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 362 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 363 | skb_trim(skb, skb->len - mic_len); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 364 | if (skb->len >= hdrlen + iv_len) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 365 | memmove(skb->data + iv_len, skb->data, hdrlen); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 366 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | no_key: |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 370 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
| 371 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); |
| 372 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, |
| 373 | hdrlen - IEEE80211_QOS_CTL_LEN); |
| 374 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 375 | } |
| 376 | } |
| 377 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 378 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
| 379 | struct sta_info *sta, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 380 | struct sk_buff *skb) |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 381 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 382 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 383 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 384 | sta->tx_filtered_count++; |
| 385 | |
| 386 | /* |
| 387 | * Clear the TX filter mask for this STA when sending the next |
| 388 | * packet. If the STA went to power save mode, this will happen |
Yi Zhu | f6d9710 | 2008-05-27 17:50:50 +0300 | [diff] [blame] | 389 | * when it wakes up for the next time. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 390 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 391 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 392 | |
| 393 | /* |
| 394 | * This code races in the following way: |
| 395 | * |
| 396 | * (1) STA sends frame indicating it will go to sleep and does so |
| 397 | * (2) hardware/firmware adds STA to filter list, passes frame up |
| 398 | * (3) hardware/firmware processes TX fifo and suppresses a frame |
| 399 | * (4) we get TX status before having processed the frame and |
| 400 | * knowing that the STA has gone to sleep. |
| 401 | * |
| 402 | * This is actually quite unlikely even when both those events are |
| 403 | * processed from interrupts coming in quickly after one another or |
| 404 | * even at the same time because we queue both TX status events and |
| 405 | * RX frames to be processed by a tasklet and process them in the |
| 406 | * same order that they were received or TX status last. Hence, there |
| 407 | * is no race as long as the frame RX is processed before the next TX |
| 408 | * status, which drivers can ensure, see below. |
| 409 | * |
| 410 | * Note that this can only happen if the hardware or firmware can |
| 411 | * actually add STAs to the filter list, if this is done by the |
| 412 | * driver in response to set_tim() (which will only reduce the race |
| 413 | * this whole filtering tries to solve, not completely solve it) |
| 414 | * this situation cannot happen. |
| 415 | * |
| 416 | * To completely solve this race drivers need to make sure that they |
| 417 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
| 418 | * functions and |
| 419 | * (b) always process RX events before TX status events if ordering |
| 420 | * can be unknown, for example with different interrupt status |
| 421 | * bits. |
| 422 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 423 | if (test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 424 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 425 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 426 | skb_queue_tail(&sta->tx_filtered, skb); |
| 427 | return; |
| 428 | } |
| 429 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 430 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 431 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 432 | /* Software retry the packet once */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 433 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
| 434 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 435 | dev_queue_xmit(skb); |
| 436 | return; |
| 437 | } |
| 438 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 439 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 440 | if (net_ratelimit()) |
| 441 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " |
| 442 | "queue_len=%d PS=%d @%lu\n", |
| 443 | wiphy_name(local->hw.wiphy), |
| 444 | skb_queue_len(&sta->tx_filtered), |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 445 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 446 | #endif |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 447 | dev_kfree_skb(skb); |
| 448 | } |
| 449 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 450 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 451 | { |
| 452 | struct sk_buff *skb2; |
| 453 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 454 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 455 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 456 | u16 frag, type; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 457 | __le16 fc; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 458 | struct ieee80211_supported_band *sband; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 459 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
| 460 | struct ieee80211_sub_if_data *sdata; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 461 | struct net_device *prev_dev = NULL; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 462 | struct sta_info *sta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 463 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 464 | rcu_read_lock(); |
| 465 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 466 | sta = sta_info_get(local, hdr->addr1); |
| 467 | |
| 468 | if (sta) { |
| 469 | if (info->status.excessive_retries && |
| 470 | test_sta_flags(sta, WLAN_STA_PS)) { |
| 471 | /* |
| 472 | * The STA is in power save mode, so assume |
| 473 | * that this TX packet failed because of that. |
| 474 | */ |
| 475 | ieee80211_handle_filtered_frame(local, sta, skb); |
| 476 | rcu_read_unlock(); |
| 477 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 478 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 479 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 480 | fc = hdr->frame_control; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 481 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 482 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
| 483 | (ieee80211_is_data_qos(fc))) { |
| 484 | u16 tid, ssn; |
| 485 | u8 *qc; |
| 486 | |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 487 | qc = ieee80211_get_qos_ctl(hdr); |
| 488 | tid = qc[0] & 0xf; |
| 489 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
| 490 | & IEEE80211_SCTL_SEQ); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 491 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 492 | tid, ssn); |
| 493 | } |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 494 | |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 495 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 496 | ieee80211_handle_filtered_frame(local, sta, skb); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 497 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 498 | return; |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 499 | } else { |
| 500 | if (info->status.excessive_retries) |
| 501 | sta->tx_retry_failed++; |
| 502 | sta->tx_retry_count += info->status.retry_count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 503 | } |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 504 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 505 | sband = local->hw.wiphy->bands[info->band]; |
| 506 | rate_control_tx_status(local, sband, sta, skb); |
Johannes Berg | 95dac040 | 2008-09-11 02:03:28 +0200 | [diff] [blame] | 507 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 508 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 509 | rcu_read_unlock(); |
| 510 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 511 | ieee80211_led_tx(local, 0); |
| 512 | |
| 513 | /* SNMP counters |
| 514 | * Fragments are passed to low-level drivers as separate skbs, so these |
| 515 | * are actually fragments, not frames. Update frame counters only for |
| 516 | * the first fragment of the frame. */ |
| 517 | |
| 518 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
| 519 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; |
| 520 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 521 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 522 | if (frag == 0) { |
| 523 | local->dot11TransmittedFrameCount++; |
| 524 | if (is_multicast_ether_addr(hdr->addr1)) |
| 525 | local->dot11MulticastTransmittedFrameCount++; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 526 | if (info->status.retry_count > 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 527 | local->dot11RetryCount++; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 528 | if (info->status.retry_count > 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 529 | local->dot11MultipleRetryCount++; |
| 530 | } |
| 531 | |
| 532 | /* This counter shall be incremented for an acknowledged MPDU |
| 533 | * with an individual address in the address 1 field or an MPDU |
| 534 | * with a multicast address in the address 1 field of type Data |
| 535 | * or Management. */ |
| 536 | if (!is_multicast_ether_addr(hdr->addr1) || |
| 537 | type == IEEE80211_FTYPE_DATA || |
| 538 | type == IEEE80211_FTYPE_MGMT) |
| 539 | local->dot11TransmittedFragmentCount++; |
| 540 | } else { |
| 541 | if (frag == 0) |
| 542 | local->dot11FailedCount++; |
| 543 | } |
| 544 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 545 | /* this was a transmitted frame, but now we want to reuse it */ |
| 546 | skb_orphan(skb); |
| 547 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 548 | /* |
| 549 | * This is a bit racy but we can avoid a lot of work |
| 550 | * with this test... |
| 551 | */ |
| 552 | if (!local->monitors && !local->cooked_mntrs) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 553 | dev_kfree_skb(skb); |
| 554 | return; |
| 555 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 556 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 557 | /* send frame to monitor interfaces now */ |
| 558 | |
| 559 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
| 560 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); |
| 561 | dev_kfree_skb(skb); |
| 562 | return; |
| 563 | } |
| 564 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 565 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 566 | skb_push(skb, sizeof(*rthdr)); |
| 567 | |
| 568 | memset(rthdr, 0, sizeof(*rthdr)); |
| 569 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); |
| 570 | rthdr->hdr.it_present = |
| 571 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | |
| 572 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); |
| 573 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 574 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 575 | !is_multicast_ether_addr(hdr->addr1)) |
| 576 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); |
| 577 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 578 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
| 579 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 580 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 581 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 582 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
| 583 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 584 | rthdr->data_retries = info->status.retry_count; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 585 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 586 | /* XXX: is this sufficient for BPF? */ |
| 587 | skb_set_mac_header(skb, 0); |
| 588 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 589 | skb->pkt_type = PACKET_OTHERHOST; |
| 590 | skb->protocol = htons(ETH_P_802_2); |
| 591 | memset(skb->cb, 0, sizeof(skb->cb)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 592 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 593 | rcu_read_lock(); |
| 594 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 595 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 596 | if (!netif_running(sdata->dev)) |
| 597 | continue; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 598 | |
| 599 | if (prev_dev) { |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 600 | skb2 = skb_clone(skb, GFP_ATOMIC); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 601 | if (skb2) { |
| 602 | skb2->dev = prev_dev; |
| 603 | netif_rx(skb2); |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | prev_dev = sdata->dev; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 608 | } |
| 609 | } |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 610 | if (prev_dev) { |
| 611 | skb->dev = prev_dev; |
| 612 | netif_rx(skb); |
| 613 | skb = NULL; |
| 614 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 615 | rcu_read_unlock(); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 616 | dev_kfree_skb(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 617 | } |
| 618 | EXPORT_SYMBOL(ieee80211_tx_status); |
| 619 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 620 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 621 | const struct ieee80211_ops *ops) |
| 622 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 623 | struct ieee80211_local *local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 624 | int priv_size; |
| 625 | struct wiphy *wiphy; |
| 626 | |
| 627 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 628 | * We use the wiphy priv data for both our ieee80211_local and for |
| 629 | * the driver's private data |
| 630 | * |
| 631 | * In memory it'll be like this: |
| 632 | * |
| 633 | * +-------------------------+ |
| 634 | * | struct wiphy | |
| 635 | * +-------------------------+ |
| 636 | * | struct ieee80211_local | |
| 637 | * +-------------------------+ |
| 638 | * | driver's private data | |
| 639 | * +-------------------------+ |
| 640 | * |
| 641 | */ |
| 642 | priv_size = ((sizeof(struct ieee80211_local) + |
| 643 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + |
| 644 | priv_data_len; |
| 645 | |
| 646 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); |
| 647 | |
| 648 | if (!wiphy) |
| 649 | return NULL; |
| 650 | |
| 651 | wiphy->privid = mac80211_wiphy_privid; |
| 652 | |
| 653 | local = wiphy_priv(wiphy); |
| 654 | local->hw.wiphy = wiphy; |
| 655 | |
| 656 | local->hw.priv = (char *)local + |
| 657 | ((sizeof(struct ieee80211_local) + |
| 658 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); |
| 659 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 660 | BUG_ON(!ops->tx); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 661 | BUG_ON(!ops->start); |
| 662 | BUG_ON(!ops->stop); |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 663 | BUG_ON(!ops->config); |
| 664 | BUG_ON(!ops->add_interface); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 665 | BUG_ON(!ops->remove_interface); |
| 666 | BUG_ON(!ops->configure_filter); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 667 | local->ops = ops; |
| 668 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 669 | local->hw.queues = 1; /* default */ |
| 670 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 671 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
| 672 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; |
| 673 | local->short_retry_limit = 7; |
| 674 | local->long_retry_limit = 4; |
| 675 | local->hw.conf.radio_enabled = 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 676 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 677 | INIT_LIST_HEAD(&local->interfaces); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 678 | |
Johannes Berg | b16bd15 | 2008-04-11 21:40:35 +0200 | [diff] [blame] | 679 | spin_lock_init(&local->key_lock); |
| 680 | |
Johannes Berg | c2b1345 | 2008-09-11 00:01:55 +0200 | [diff] [blame] | 681 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 682 | |
| 683 | sta_info_init(local); |
| 684 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 685 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 686 | (unsigned long)local); |
| 687 | tasklet_disable(&local->tx_pending_tasklet); |
| 688 | |
| 689 | tasklet_init(&local->tasklet, |
| 690 | ieee80211_tasklet_handler, |
| 691 | (unsigned long) local); |
| 692 | tasklet_disable(&local->tasklet); |
| 693 | |
| 694 | skb_queue_head_init(&local->skb_queue); |
| 695 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 696 | |
| 697 | return local_to_hw(local); |
| 698 | } |
| 699 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 700 | |
| 701 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 702 | { |
| 703 | struct ieee80211_local *local = hw_to_local(hw); |
| 704 | const char *name; |
| 705 | int result; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 706 | enum ieee80211_band band; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 707 | struct net_device *mdev; |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 708 | struct ieee80211_master_priv *mpriv; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 709 | |
| 710 | /* |
| 711 | * generic code guarantees at least one band, |
| 712 | * set this very early because much code assumes |
| 713 | * that hw.conf.channel is assigned |
| 714 | */ |
| 715 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 716 | struct ieee80211_supported_band *sband; |
| 717 | |
| 718 | sband = local->hw.wiphy->bands[band]; |
| 719 | if (sband) { |
| 720 | /* init channel we're on */ |
| 721 | local->hw.conf.channel = |
| 722 | local->oper_channel = |
| 723 | local->scan_channel = &sband->channels[0]; |
| 724 | break; |
| 725 | } |
| 726 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 727 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 728 | /* if low-level driver supports AP, we also support VLAN */ |
| 729 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) |
| 730 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| 731 | |
| 732 | /* mac80211 always supports monitor */ |
| 733 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| 734 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 735 | result = wiphy_register(local->hw.wiphy); |
| 736 | if (result < 0) |
| 737 | return result; |
| 738 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 739 | /* |
| 740 | * We use the number of queues for feature tests (QoS, HT) internally |
| 741 | * so restrict them appropriately. |
| 742 | */ |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 743 | if (hw->queues > IEEE80211_MAX_QUEUES) |
| 744 | hw->queues = IEEE80211_MAX_QUEUES; |
| 745 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) |
| 746 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; |
| 747 | if (hw->queues < 4) |
| 748 | hw->ampdu_queues = 0; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 749 | |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 750 | mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 751 | "wmaster%d", ether_setup, |
| 752 | ieee80211_num_queues(hw)); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 753 | if (!mdev) |
| 754 | goto fail_mdev_alloc; |
| 755 | |
Johannes Berg | 133b822 | 2008-09-16 14:18:59 +0200 | [diff] [blame] | 756 | mpriv = netdev_priv(mdev); |
| 757 | mpriv->local = local; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 758 | local->mdev = mdev; |
| 759 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 760 | ieee80211_rx_bss_list_init(local); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 761 | |
| 762 | mdev->hard_start_xmit = ieee80211_master_start_xmit; |
| 763 | mdev->open = ieee80211_master_open; |
| 764 | mdev->stop = ieee80211_master_stop; |
| 765 | mdev->type = ARPHRD_IEEE80211; |
| 766 | mdev->header_ops = &ieee80211_header_ops; |
| 767 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; |
| 768 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 769 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
Johannes Berg | 59959a6 | 2008-06-26 19:59:56 +0200 | [diff] [blame] | 770 | local->hw.workqueue = create_freezeable_workqueue(name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 771 | if (!local->hw.workqueue) { |
| 772 | result = -ENOMEM; |
| 773 | goto fail_workqueue; |
| 774 | } |
| 775 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 776 | /* |
| 777 | * The hardware needs headroom for sending the frame, |
| 778 | * and we need some headroom for passing the frame to monitor |
| 779 | * interfaces, but never both at the same time. |
| 780 | */ |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 781 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 782 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 783 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 784 | debugfs_hw_add(local); |
| 785 | |
Tomas Winkler | dc0ae30 | 2008-06-12 22:38:37 +0300 | [diff] [blame] | 786 | if (local->hw.conf.beacon_int < 10) |
| 787 | local->hw.conf.beacon_int = 100; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 788 | |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 789 | if (local->hw.max_listen_interval == 0) |
| 790 | local->hw.max_listen_interval = 1; |
| 791 | |
| 792 | local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| 793 | |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 794 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
| 795 | IEEE80211_HW_SIGNAL_DB | |
| 796 | IEEE80211_HW_SIGNAL_DBM) ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 797 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 798 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 799 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 800 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 801 | local->wstats_flags |= IW_QUAL_DBM; |
| 802 | |
| 803 | result = sta_info_start(local); |
| 804 | if (result < 0) |
| 805 | goto fail_sta_info; |
| 806 | |
| 807 | rtnl_lock(); |
| 808 | result = dev_alloc_name(local->mdev, local->mdev->name); |
| 809 | if (result < 0) |
| 810 | goto fail_dev; |
| 811 | |
| 812 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
| 813 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); |
| 814 | |
| 815 | result = register_netdevice(local->mdev); |
| 816 | if (result < 0) |
| 817 | goto fail_dev; |
| 818 | |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 819 | result = ieee80211_init_rate_ctrl_alg(local, |
| 820 | hw->rate_control_algorithm); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 821 | if (result < 0) { |
| 822 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 823 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 824 | goto fail_rate; |
| 825 | } |
| 826 | |
| 827 | result = ieee80211_wep_init(local); |
| 828 | |
| 829 | if (result < 0) { |
Jeremy Fitzhardinge | 023a04b | 2008-07-14 12:52:08 -0700 | [diff] [blame] | 830 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
| 831 | wiphy_name(local->hw.wiphy), result); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 832 | goto fail_wep; |
| 833 | } |
| 834 | |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 835 | local->mdev->select_queue = ieee80211_select_queue; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 836 | |
| 837 | /* add one default STA interface */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 838 | result = ieee80211_if_add(local, "wlan%d", NULL, |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 839 | NL80211_IFTYPE_STATION, NULL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 840 | if (result) |
| 841 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 842 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 843 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 844 | rtnl_unlock(); |
| 845 | |
| 846 | ieee80211_led_init(local); |
| 847 | |
| 848 | return 0; |
| 849 | |
| 850 | fail_wep: |
| 851 | rate_control_deinitialize(local); |
| 852 | fail_rate: |
| 853 | unregister_netdevice(local->mdev); |
Pavel Emelyanov | 339a7c4 | 2008-05-04 17:59:30 -0700 | [diff] [blame] | 854 | local->mdev = NULL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 855 | fail_dev: |
| 856 | rtnl_unlock(); |
| 857 | sta_info_stop(local); |
| 858 | fail_sta_info: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 859 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 860 | destroy_workqueue(local->hw.workqueue); |
| 861 | fail_workqueue: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 862 | if (local->mdev) |
| 863 | free_netdev(local->mdev); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 864 | fail_mdev_alloc: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 865 | wiphy_unregister(local->hw.wiphy); |
| 866 | return result; |
| 867 | } |
| 868 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 869 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 870 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 871 | { |
| 872 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 873 | |
| 874 | tasklet_kill(&local->tx_pending_tasklet); |
| 875 | tasklet_kill(&local->tasklet); |
| 876 | |
| 877 | rtnl_lock(); |
| 878 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 879 | /* |
| 880 | * At this point, interface list manipulations are fine |
| 881 | * because the driver cannot be handing us frames any |
| 882 | * more and the tasklet is killed. |
| 883 | */ |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 884 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 885 | /* First, we remove all virtual interfaces. */ |
| 886 | ieee80211_remove_interfaces(local); |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 887 | |
| 888 | /* then, finally, remove the master interface */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 889 | unregister_netdevice(local->mdev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 890 | |
| 891 | rtnl_unlock(); |
| 892 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 893 | ieee80211_rx_bss_list_deinit(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 894 | ieee80211_clear_tx_pending(local); |
| 895 | sta_info_stop(local); |
| 896 | rate_control_deinitialize(local); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 897 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 898 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 899 | if (skb_queue_len(&local->skb_queue) |
| 900 | || skb_queue_len(&local->skb_queue_unreliable)) |
| 901 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 902 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 903 | skb_queue_purge(&local->skb_queue); |
| 904 | skb_queue_purge(&local->skb_queue_unreliable); |
| 905 | |
| 906 | destroy_workqueue(local->hw.workqueue); |
| 907 | wiphy_unregister(local->hw.wiphy); |
| 908 | ieee80211_wep_free(local); |
| 909 | ieee80211_led_exit(local); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 910 | free_netdev(local->mdev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 911 | } |
| 912 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 913 | |
| 914 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 915 | { |
| 916 | struct ieee80211_local *local = hw_to_local(hw); |
| 917 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 918 | wiphy_free(local->hw.wiphy); |
| 919 | } |
| 920 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 921 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 922 | static int __init ieee80211_init(void) |
| 923 | { |
| 924 | struct sk_buff *skb; |
| 925 | int ret; |
| 926 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 927 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| 928 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
Johannes Berg | c6a1fa1 | 2008-10-07 12:04:32 +0200 | [diff] [blame] | 929 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 930 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 931 | ret = rc80211_minstrel_init(); |
| 932 | if (ret) |
| 933 | return ret; |
| 934 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 935 | ret = rc80211_pid_init(); |
Mattias Nissler | ad01837 | 2007-12-19 01:25:57 +0100 | [diff] [blame] | 936 | if (ret) |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 937 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 938 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 939 | ieee80211_debugfs_netdev_init(); |
| 940 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 941 | return 0; |
| 942 | } |
| 943 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 944 | static void __exit ieee80211_exit(void) |
| 945 | { |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 946 | rc80211_pid_exit(); |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 947 | rc80211_minstrel_exit(); |
Johannes Berg | ac71c69 | 2007-10-28 14:17:44 +0100 | [diff] [blame] | 948 | |
Johannes Berg | 3b96766 | 2008-04-08 17:56:52 +0200 | [diff] [blame] | 949 | /* |
| 950 | * For key todo, it'll be empty by now but the work |
| 951 | * might still be scheduled. |
| 952 | */ |
| 953 | flush_scheduled_work(); |
| 954 | |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 955 | if (mesh_allocated) |
| 956 | ieee80211s_stop(); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 957 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 958 | ieee80211_debugfs_netdev_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 962 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 963 | module_exit(ieee80211_exit); |
| 964 | |
| 965 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 966 | MODULE_LICENSE("GPL"); |