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 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 48 | /* common interface routines */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 49 | |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 50 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 51 | { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 52 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ |
| 53 | return ETH_ALEN; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 54 | } |
| 55 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 56 | /* must be called under mdev tx lock */ |
| 57 | static void ieee80211_configure_filter(struct ieee80211_local *local) |
| 58 | { |
| 59 | unsigned int changed_flags; |
| 60 | unsigned int new_flags = 0; |
| 61 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 62 | if (atomic_read(&local->iff_promiscs)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 63 | new_flags |= FIF_PROMISC_IN_BSS; |
| 64 | |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 65 | if (atomic_read(&local->iff_allmultis)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 66 | new_flags |= FIF_ALLMULTI; |
| 67 | |
| 68 | if (local->monitors) |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 69 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
| 70 | |
| 71 | if (local->fif_fcsfail) |
| 72 | new_flags |= FIF_FCSFAIL; |
| 73 | |
| 74 | if (local->fif_plcpfail) |
| 75 | new_flags |= FIF_PLCPFAIL; |
| 76 | |
| 77 | if (local->fif_control) |
| 78 | new_flags |= FIF_CONTROL; |
| 79 | |
| 80 | if (local->fif_other_bss) |
| 81 | new_flags |= FIF_OTHER_BSS; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 82 | |
| 83 | changed_flags = local->filter_flags ^ new_flags; |
| 84 | |
| 85 | /* be a bit nasty */ |
| 86 | new_flags |= (1<<31); |
| 87 | |
| 88 | local->ops->configure_filter(local_to_hw(local), |
| 89 | changed_flags, &new_flags, |
| 90 | local->mdev->mc_count, |
| 91 | local->mdev->mc_list); |
| 92 | |
| 93 | WARN_ON(new_flags & (1<<31)); |
| 94 | |
| 95 | local->filter_flags = new_flags & ~(1<<31); |
| 96 | } |
| 97 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 98 | /* master interface */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 99 | |
| 100 | static int ieee80211_master_open(struct net_device *dev) |
| 101 | { |
| 102 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 103 | struct ieee80211_sub_if_data *sdata; |
| 104 | int res = -EOPNOTSUPP; |
| 105 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 106 | /* we hold the RTNL here so can safely walk the list */ |
| 107 | list_for_each_entry(sdata, &local->interfaces, list) { |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 108 | if (netif_running(sdata->dev)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 109 | res = 0; |
| 110 | break; |
| 111 | } |
| 112 | } |
Johannes Berg | 36d6825 | 2008-05-15 12:55:26 +0200 | [diff] [blame] | 113 | |
| 114 | if (res) |
| 115 | return res; |
| 116 | |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 117 | netif_tx_start_all_queues(local->mdev); |
Johannes Berg | 36d6825 | 2008-05-15 12:55:26 +0200 | [diff] [blame] | 118 | |
| 119 | return 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static int ieee80211_master_stop(struct net_device *dev) |
| 123 | { |
| 124 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 125 | struct ieee80211_sub_if_data *sdata; |
| 126 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 127 | /* we hold the RTNL here so can safely walk the list */ |
| 128 | list_for_each_entry(sdata, &local->interfaces, list) |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 129 | if (netif_running(sdata->dev)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 130 | dev_close(sdata->dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 131 | |
| 132 | return 0; |
| 133 | } |
| 134 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 135 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
| 136 | { |
| 137 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 138 | |
| 139 | ieee80211_configure_filter(local); |
| 140 | } |
| 141 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 142 | /* regular interfaces */ |
| 143 | |
| 144 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
| 145 | { |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 146 | int meshhdrlen; |
| 147 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 148 | |
| 149 | meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0; |
| 150 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 151 | /* FIX: what would be proper limits for MTU? |
| 152 | * This interface uses 802.3 frames. */ |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 153 | if (new_mtu < 256 || |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 154 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 155 | return -EINVAL; |
| 156 | } |
| 157 | |
| 158 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 159 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); |
| 160 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ |
| 161 | dev->mtu = new_mtu; |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | static inline int identical_mac_addr_allowed(int type1, int type2) |
| 166 | { |
| 167 | return (type1 == IEEE80211_IF_TYPE_MNTR || |
| 168 | type2 == IEEE80211_IF_TYPE_MNTR || |
| 169 | (type1 == IEEE80211_IF_TYPE_AP && |
| 170 | type2 == IEEE80211_IF_TYPE_WDS) || |
| 171 | (type1 == IEEE80211_IF_TYPE_WDS && |
| 172 | (type2 == IEEE80211_IF_TYPE_WDS || |
| 173 | type2 == IEEE80211_IF_TYPE_AP)) || |
| 174 | (type1 == IEEE80211_IF_TYPE_AP && |
| 175 | type2 == IEEE80211_IF_TYPE_VLAN) || |
| 176 | (type1 == IEEE80211_IF_TYPE_VLAN && |
| 177 | (type2 == IEEE80211_IF_TYPE_AP || |
| 178 | type2 == IEEE80211_IF_TYPE_VLAN))); |
| 179 | } |
| 180 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 181 | static int ieee80211_open(struct net_device *dev) |
| 182 | { |
| 183 | struct ieee80211_sub_if_data *sdata, *nsdata; |
| 184 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
Tomas Winkler | fc32f92 | 2008-07-03 01:27:13 +0300 | [diff] [blame] | 185 | struct sta_info *sta; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 186 | struct ieee80211_if_init_conf conf; |
Tomas Winkler | fc32f92 | 2008-07-03 01:27:13 +0300 | [diff] [blame] | 187 | u32 changed = 0; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 188 | int res; |
Michael Buesch | ceffefd | 2008-02-10 14:16:52 +0100 | [diff] [blame] | 189 | bool need_hw_reconfig = 0; |
Luis Carlos Cobo | bdbe819 | 2008-08-14 10:40:48 -0700 | [diff] [blame] | 190 | u8 null_addr[ETH_ALEN] = {0}; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 191 | |
| 192 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 193 | |
Luis Carlos Cobo | bdbe819 | 2008-08-14 10:40:48 -0700 | [diff] [blame] | 194 | /* fail early if user set an invalid address */ |
| 195 | if (compare_ether_addr(dev->dev_addr, null_addr) && |
| 196 | !is_valid_ether_addr(dev->dev_addr)) |
| 197 | return -EADDRNOTAVAIL; |
| 198 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 199 | /* we hold the RTNL here so can safely walk the list */ |
| 200 | list_for_each_entry(nsdata, &local->interfaces, list) { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 201 | struct net_device *ndev = nsdata->dev; |
| 202 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 203 | if (ndev != dev && netif_running(ndev)) { |
Johannes Berg | 665e8aa | 2008-02-21 01:10:07 +0100 | [diff] [blame] | 204 | /* |
| 205 | * Allow only a single IBSS interface to be up at any |
| 206 | * time. This is restricted because beacon distribution |
| 207 | * cannot work properly if both are in the same IBSS. |
| 208 | * |
| 209 | * To remove this restriction we'd have to disallow them |
| 210 | * from setting the same SSID on different IBSS interfaces |
| 211 | * belonging to the same hardware. Then, however, we're |
| 212 | * faced with having to adopt two different TSF timers... |
| 213 | */ |
| 214 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
| 215 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS) |
| 216 | return -EBUSY; |
| 217 | |
| 218 | /* |
Johannes Berg | 665e8aa | 2008-02-21 01:10:07 +0100 | [diff] [blame] | 219 | * The remaining checks are only performed for interfaces |
| 220 | * with the same MAC address. |
| 221 | */ |
| 222 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) |
| 223 | continue; |
| 224 | |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 225 | /* |
| 226 | * check whether it may have the same address |
| 227 | */ |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 228 | if (!identical_mac_addr_allowed(sdata->vif.type, |
| 229 | nsdata->vif.type)) |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 230 | return -ENOTUNIQ; |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 231 | |
| 232 | /* |
| 233 | * can only add VLANs to enabled APs |
| 234 | */ |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 235 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
Johannes Berg | 665e8aa | 2008-02-21 01:10:07 +0100 | [diff] [blame] | 236 | nsdata->vif.type == IEEE80211_IF_TYPE_AP) |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 237 | sdata->bss = &nsdata->u.ap; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 238 | } |
| 239 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 240 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 241 | switch (sdata->vif.type) { |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 242 | case IEEE80211_IF_TYPE_WDS: |
Johannes Berg | e94e106 | 2008-04-24 14:16:36 +0200 | [diff] [blame] | 243 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 244 | return -ENOLINK; |
| 245 | break; |
| 246 | case IEEE80211_IF_TYPE_VLAN: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 247 | if (!sdata->bss) |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 248 | return -ENOLINK; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 249 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 250 | break; |
Johannes Berg | fb1c1cd | 2007-09-26 15:19:43 +0200 | [diff] [blame] | 251 | case IEEE80211_IF_TYPE_AP: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 252 | sdata->bss = &sdata->u.ap; |
| 253 | break; |
Luis Carlos Cobo | 8dbc172 | 2008-08-06 13:17:54 +0200 | [diff] [blame] | 254 | case IEEE80211_IF_TYPE_MESH_POINT: |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame^] | 255 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
| 256 | break; |
Luis Carlos Cobo | 8dbc172 | 2008-08-06 13:17:54 +0200 | [diff] [blame] | 257 | /* mesh ifaces must set allmulti to forward mcast traffic */ |
| 258 | atomic_inc(&local->iff_allmultis); |
| 259 | break; |
Johannes Berg | fb1c1cd | 2007-09-26 15:19:43 +0200 | [diff] [blame] | 260 | case IEEE80211_IF_TYPE_STA: |
| 261 | case IEEE80211_IF_TYPE_MNTR: |
| 262 | case IEEE80211_IF_TYPE_IBSS: |
| 263 | /* no special treatment */ |
| 264 | break; |
Johannes Berg | a289755 | 2007-09-28 14:01:25 +0200 | [diff] [blame] | 265 | case IEEE80211_IF_TYPE_INVALID: |
| 266 | /* cannot happen */ |
| 267 | WARN_ON(1); |
| 268 | break; |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 269 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 270 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 271 | if (local->open_count == 0) { |
| 272 | res = 0; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 273 | if (local->ops->start) |
| 274 | res = local->ops->start(local_to_hw(local)); |
| 275 | if (res) |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 276 | goto err_del_bss; |
Michael Buesch | ceffefd | 2008-02-10 14:16:52 +0100 | [diff] [blame] | 277 | need_hw_reconfig = 1; |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 278 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 279 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 280 | |
Luis Carlos Cobo | bdbe819 | 2008-08-14 10:40:48 -0700 | [diff] [blame] | 281 | /* |
| 282 | * Check all interfaces and copy the hopefully now-present |
| 283 | * MAC address to those that have the special null one. |
| 284 | */ |
| 285 | list_for_each_entry(nsdata, &local->interfaces, list) { |
| 286 | struct net_device *ndev = nsdata->dev; |
| 287 | |
| 288 | /* |
| 289 | * No need to check netif_running since we do not allow |
| 290 | * it to start up with this invalid address. |
| 291 | */ |
| 292 | if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) |
| 293 | memcpy(ndev->dev_addr, |
| 294 | local->hw.wiphy->perm_addr, |
| 295 | ETH_ALEN); |
| 296 | } |
| 297 | |
| 298 | if (compare_ether_addr(null_addr, local->mdev->dev_addr) == 0) |
| 299 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, |
| 300 | ETH_ALEN); |
| 301 | |
| 302 | /* |
| 303 | * Validate the MAC address for this device. |
| 304 | */ |
| 305 | if (!is_valid_ether_addr(dev->dev_addr)) { |
| 306 | if (!local->open_count && local->ops->stop) |
| 307 | local->ops->stop(local_to_hw(local)); |
| 308 | return -EADDRNOTAVAIL; |
| 309 | } |
| 310 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 311 | switch (sdata->vif.type) { |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 312 | case IEEE80211_IF_TYPE_VLAN: |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 313 | /* no need to tell driver */ |
| 314 | break; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 315 | case IEEE80211_IF_TYPE_MNTR: |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 316 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 317 | local->cooked_mntrs++; |
| 318 | break; |
| 319 | } |
| 320 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 321 | /* must be before the call to ieee80211_configure_filter */ |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 322 | local->monitors++; |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 323 | if (local->monitors == 1) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 324 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 325 | |
| 326 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) |
| 327 | local->fif_fcsfail++; |
| 328 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) |
| 329 | local->fif_plcpfail++; |
| 330 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) |
| 331 | local->fif_control++; |
| 332 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) |
| 333 | local->fif_other_bss++; |
| 334 | |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 335 | netif_addr_lock_bh(local->mdev); |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 336 | ieee80211_configure_filter(local); |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 337 | netif_addr_unlock_bh(local->mdev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 338 | break; |
| 339 | case IEEE80211_IF_TYPE_STA: |
| 340 | case IEEE80211_IF_TYPE_IBSS: |
| 341 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
| 342 | /* fall through */ |
| 343 | default: |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 344 | conf.vif = &sdata->vif; |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 345 | conf.type = sdata->vif.type; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 346 | conf.mac_addr = dev->dev_addr; |
| 347 | res = local->ops->add_interface(local_to_hw(local), &conf); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 348 | if (res) |
Johannes Berg | 636c5d4 | 2008-04-24 14:18:37 +0200 | [diff] [blame] | 349 | goto err_stop; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 350 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 351 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 352 | ieee80211_start_mesh(sdata); |
| 353 | changed |= ieee80211_reset_erp_info(sdata); |
Tomas Winkler | fc32f92 | 2008-07-03 01:27:13 +0300 | [diff] [blame] | 354 | ieee80211_bss_info_change_notify(sdata, changed); |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 355 | ieee80211_enable_keys(sdata); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 356 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 357 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
Johannes Berg | ddd3d2b | 2007-09-26 17:53:20 +0200 | [diff] [blame] | 358 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 359 | netif_carrier_off(dev); |
| 360 | else |
| 361 | netif_carrier_on(dev); |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 362 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 363 | |
Johannes Berg | 636c5d4 | 2008-04-24 14:18:37 +0200 | [diff] [blame] | 364 | if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) { |
| 365 | /* Create STA entry for the WDS peer */ |
| 366 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, |
| 367 | GFP_KERNEL); |
| 368 | if (!sta) { |
| 369 | res = -ENOMEM; |
| 370 | goto err_del_interface; |
| 371 | } |
| 372 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 373 | /* no locking required since STA is not live yet */ |
Johannes Berg | 636c5d4 | 2008-04-24 14:18:37 +0200 | [diff] [blame] | 374 | sta->flags |= WLAN_STA_AUTHORIZED; |
| 375 | |
| 376 | res = sta_info_insert(sta); |
| 377 | if (res) { |
| 378 | /* STA has been freed */ |
| 379 | goto err_del_interface; |
| 380 | } |
| 381 | } |
| 382 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 383 | if (local->open_count == 0) { |
| 384 | res = dev_open(local->mdev); |
| 385 | WARN_ON(res); |
Johannes Berg | 636c5d4 | 2008-04-24 14:18:37 +0200 | [diff] [blame] | 386 | if (res) |
| 387 | goto err_del_interface; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 388 | tasklet_enable(&local->tx_pending_tasklet); |
| 389 | tasklet_enable(&local->tasklet); |
| 390 | } |
| 391 | |
Johannes Berg | c1428b3 | 2007-11-16 02:54:53 +0100 | [diff] [blame] | 392 | /* |
| 393 | * set_multicast_list will be invoked by the networking core |
| 394 | * which will check whether any increments here were done in |
| 395 | * error and sync them down to the hardware as filter flags. |
| 396 | */ |
| 397 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 398 | atomic_inc(&local->iff_allmultis); |
| 399 | |
| 400 | if (sdata->flags & IEEE80211_SDATA_PROMISC) |
| 401 | atomic_inc(&local->iff_promiscs); |
| 402 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 403 | local->open_count++; |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 404 | if (need_hw_reconfig) { |
Michael Buesch | ceffefd | 2008-02-10 14:16:52 +0100 | [diff] [blame] | 405 | ieee80211_hw_config(local); |
Johannes Berg | 5825fe10 | 2008-09-09 12:56:01 +0200 | [diff] [blame] | 406 | /* |
| 407 | * set default queue parameters so drivers don't |
| 408 | * need to initialise the hardware if the hardware |
| 409 | * doesn't start up with sane defaults |
| 410 | */ |
| 411 | ieee80211_set_wmm_default(sdata); |
| 412 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 413 | |
Jan Niehusmann | 64f851e | 2008-03-23 20:23:56 +0100 | [diff] [blame] | 414 | /* |
| 415 | * ieee80211_sta_work is disabled while network interface |
| 416 | * is down. Therefore, some configuration changes may not |
| 417 | * yet be effective. Trigger execution of ieee80211_sta_work |
| 418 | * to fix this. |
| 419 | */ |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 420 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
| 421 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
Jan Niehusmann | 64f851e | 2008-03-23 20:23:56 +0100 | [diff] [blame] | 422 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
| 423 | queue_work(local->hw.workqueue, &ifsta->work); |
| 424 | } |
| 425 | |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 426 | netif_tx_start_all_queues(dev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 427 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 428 | return 0; |
Johannes Berg | 636c5d4 | 2008-04-24 14:18:37 +0200 | [diff] [blame] | 429 | err_del_interface: |
| 430 | local->ops->remove_interface(local_to_hw(local), &conf); |
| 431 | err_stop: |
| 432 | if (!local->open_count && local->ops->stop) |
| 433 | local->ops->stop(local_to_hw(local)); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 434 | err_del_bss: |
| 435 | sdata->bss = NULL; |
| 436 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) |
| 437 | list_del(&sdata->u.vlan.list); |
Johannes Berg | 636c5d4 | 2008-04-24 14:18:37 +0200 | [diff] [blame] | 438 | return res; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 439 | } |
| 440 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 441 | static int ieee80211_stop(struct net_device *dev) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 442 | { |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 443 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 444 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 445 | struct ieee80211_if_init_conf conf; |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 446 | struct sta_info *sta; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 447 | |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 448 | /* |
| 449 | * Stop TX on this interface first. |
| 450 | */ |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 451 | netif_tx_stop_all_queues(dev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 452 | |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 453 | /* |
| 454 | * Now delete all active aggregation sessions. |
| 455 | */ |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 456 | rcu_read_lock(); |
| 457 | |
| 458 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 459 | if (sta->sdata == sdata) |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 460 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr); |
Ron Rindjunsky | 07db218 | 2007-12-25 17:00:33 +0200 | [diff] [blame] | 461 | } |
| 462 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 463 | rcu_read_unlock(); |
| 464 | |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 465 | /* |
| 466 | * Remove all stations associated with this interface. |
| 467 | * |
| 468 | * This must be done before calling ops->remove_interface() |
| 469 | * because otherwise we can later invoke ops->sta_notify() |
| 470 | * whenever the STAs are removed, and that invalidates driver |
| 471 | * assumptions about always getting a vif pointer that is valid |
| 472 | * (because if we remove a STA after ops->remove_interface() |
| 473 | * the driver will have removed the vif info already!) |
| 474 | * |
| 475 | * We could relax this and only unlink the stations from the |
| 476 | * hash table and list but keep them on a per-sdata list that |
| 477 | * will be inserted back again when the interface is brought |
| 478 | * up again, but I don't currently see a use case for that, |
| 479 | * except with WDS which gets a STA entry created when it is |
| 480 | * brought up. |
| 481 | */ |
| 482 | sta_info_flush(local, sdata); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 483 | |
Johannes Berg | c1428b3 | 2007-11-16 02:54:53 +0100 | [diff] [blame] | 484 | /* |
| 485 | * Don't count this interface for promisc/allmulti while it |
| 486 | * is down. dev_mc_unsync() will invoke set_multicast_list |
| 487 | * on the master interface which will sync these down to the |
| 488 | * hardware as filter flags. |
| 489 | */ |
| 490 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
| 491 | atomic_dec(&local->iff_allmultis); |
| 492 | |
| 493 | if (sdata->flags & IEEE80211_SDATA_PROMISC) |
| 494 | atomic_dec(&local->iff_promiscs); |
| 495 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 496 | dev_mc_unsync(local->mdev, dev); |
| 497 | |
Johannes Berg | 5dfdaf5 | 2007-12-19 02:03:33 +0100 | [diff] [blame] | 498 | /* APs need special treatment */ |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 499 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 500 | struct ieee80211_sub_if_data *vlan, *tmp; |
Johannes Berg | 5dfdaf5 | 2007-12-19 02:03:33 +0100 | [diff] [blame] | 501 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 502 | |
Johannes Berg | 5dfdaf5 | 2007-12-19 02:03:33 +0100 | [diff] [blame] | 503 | /* remove beacon */ |
| 504 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); |
| 505 | synchronize_rcu(); |
| 506 | kfree(old_beacon); |
| 507 | |
| 508 | /* down all dependent devices, that is VLANs */ |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 509 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
| 510 | u.vlan.list) |
| 511 | dev_close(vlan->dev); |
| 512 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); |
| 513 | } |
| 514 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 515 | local->open_count--; |
| 516 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 517 | switch (sdata->vif.type) { |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 518 | case IEEE80211_IF_TYPE_VLAN: |
| 519 | list_del(&sdata->u.vlan.list); |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 520 | /* no need to tell driver */ |
| 521 | break; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 522 | case IEEE80211_IF_TYPE_MNTR: |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 523 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
| 524 | local->cooked_mntrs--; |
| 525 | break; |
| 526 | } |
| 527 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 528 | local->monitors--; |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 529 | if (local->monitors == 0) |
Michael Wu | 8b393f1 | 2007-11-28 01:57:08 -0500 | [diff] [blame] | 530 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 531 | |
| 532 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) |
| 533 | local->fif_fcsfail--; |
| 534 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) |
| 535 | local->fif_plcpfail--; |
| 536 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) |
| 537 | local->fif_control--; |
| 538 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) |
| 539 | local->fif_other_bss--; |
| 540 | |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 541 | netif_addr_lock_bh(local->mdev); |
Michael Wu | 8cc9a73 | 2008-01-31 19:48:23 +0100 | [diff] [blame] | 542 | ieee80211_configure_filter(local); |
David S. Miller | b9e4085 | 2008-07-15 00:15:08 -0700 | [diff] [blame] | 543 | netif_addr_unlock_bh(local->mdev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 544 | break; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 545 | case IEEE80211_IF_TYPE_STA: |
| 546 | case IEEE80211_IF_TYPE_IBSS: |
Tomas Winkler | 48c2fc5 | 2008-08-06 14:22:01 +0300 | [diff] [blame] | 547 | sdata->u.sta.state = IEEE80211_STA_MLME_DISABLED; |
Assaf Krauss | ad81b2f | 2008-06-04 20:27:59 +0300 | [diff] [blame] | 548 | memset(sdata->u.sta.bssid, 0, ETH_ALEN); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 549 | del_timer_sync(&sdata->u.sta.timer); |
Johannes Berg | 2a8a9a8 | 2007-08-28 17:01:52 -0400 | [diff] [blame] | 550 | /* |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 551 | * When we get here, the interface is marked down. |
| 552 | * Call synchronize_rcu() to wait for the RX path |
| 553 | * should it be using the interface and enqueuing |
| 554 | * frames at this very time on another CPU. |
Johannes Berg | 2a8a9a8 | 2007-08-28 17:01:52 -0400 | [diff] [blame] | 555 | */ |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 556 | synchronize_rcu(); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 557 | skb_queue_purge(&sdata->u.sta.skb_queue); |
Johannes Berg | 2a8a9a8 | 2007-08-28 17:01:52 -0400 | [diff] [blame] | 558 | |
Johannes Berg | 491775a | 2008-09-08 17:44:23 +0200 | [diff] [blame] | 559 | if (local->scan_sdata == sdata) { |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 560 | if (!local->ops->hw_scan) { |
| 561 | local->sta_sw_scanning = 0; |
| 562 | cancel_delayed_work(&local->scan_work); |
| 563 | } else |
| 564 | local->sta_hw_scanning = 0; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 565 | } |
Zhu Yi | ece8edd | 2007-11-22 10:53:21 +0800 | [diff] [blame] | 566 | |
Zhu Yi | a10605e | 2007-11-22 11:10:22 +0800 | [diff] [blame] | 567 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; |
| 568 | kfree(sdata->u.sta.extra_ie); |
| 569 | sdata->u.sta.extra_ie = NULL; |
| 570 | sdata->u.sta.extra_ie_len = 0; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 571 | /* fall through */ |
Johannes Berg | 472dbc4 | 2008-09-11 00:01:49 +0200 | [diff] [blame^] | 572 | case IEEE80211_IF_TYPE_MESH_POINT: |
| 573 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 574 | /* allmulti is always set on mesh ifaces */ |
| 575 | atomic_dec(&local->iff_allmultis); |
| 576 | ieee80211_stop_mesh(sdata); |
| 577 | } |
| 578 | /* fall through */ |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 579 | default: |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 580 | conf.vif = &sdata->vif; |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 581 | conf.type = sdata->vif.type; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 582 | conf.mac_addr = dev->dev_addr; |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 583 | /* disable all keys for as long as this netdev is down */ |
| 584 | ieee80211_disable_keys(sdata); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 585 | local->ops->remove_interface(local_to_hw(local), &conf); |
| 586 | } |
| 587 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 588 | sdata->bss = NULL; |
| 589 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 590 | if (local->open_count == 0) { |
| 591 | if (netif_running(local->mdev)) |
| 592 | dev_close(local->mdev); |
| 593 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 594 | if (local->ops->stop) |
| 595 | local->ops->stop(local_to_hw(local)); |
| 596 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 597 | ieee80211_led_radio(local, 0); |
| 598 | |
Ivo van Doorn | ea0c925 | 2008-07-03 19:02:44 +0200 | [diff] [blame] | 599 | flush_workqueue(local->hw.workqueue); |
| 600 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 601 | tasklet_disable(&local->tx_pending_tasklet); |
| 602 | tasklet_disable(&local->tasklet); |
| 603 | } |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 604 | |
| 605 | return 0; |
| 606 | } |
| 607 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 608 | static void ieee80211_set_multicast_list(struct net_device *dev) |
| 609 | { |
| 610 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 611 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 612 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 613 | |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 614 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
| 615 | promisc = !!(dev->flags & IFF_PROMISC); |
Johannes Berg | b52f219 | 2007-11-16 01:49:11 +0100 | [diff] [blame] | 616 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
| 617 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 618 | |
| 619 | if (allmulti != sdata_allmulti) { |
| 620 | if (dev->flags & IFF_ALLMULTI) |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 621 | atomic_inc(&local->iff_allmultis); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 622 | else |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 623 | atomic_dec(&local->iff_allmultis); |
Jiri Slaby | 13262ff | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 624 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 625 | } |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 626 | |
| 627 | if (promisc != sdata_promisc) { |
| 628 | if (dev->flags & IFF_PROMISC) |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 629 | atomic_inc(&local->iff_promiscs); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 630 | else |
Johannes Berg | 5391899 | 2007-09-26 15:19:47 +0200 | [diff] [blame] | 631 | atomic_dec(&local->iff_promiscs); |
Jiri Slaby | 13262ff | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 632 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 633 | } |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 634 | |
| 635 | dev_mc_sync(local->mdev, dev); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 636 | } |
| 637 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 638 | static const struct header_ops ieee80211_header_ops = { |
| 639 | .create = eth_header, |
| 640 | .parse = header_parse_80211, |
| 641 | .rebuild = eth_rebuild_header, |
| 642 | .cache = eth_header_cache, |
| 643 | .cache_update = eth_header_cache_update, |
| 644 | }; |
| 645 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 646 | void ieee80211_if_setup(struct net_device *dev) |
| 647 | { |
| 648 | ether_setup(dev); |
| 649 | dev->hard_start_xmit = ieee80211_subif_start_xmit; |
| 650 | dev->wireless_handlers = &ieee80211_iw_handler_def; |
| 651 | dev->set_multicast_list = ieee80211_set_multicast_list; |
| 652 | dev->change_mtu = ieee80211_change_mtu; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 653 | dev->open = ieee80211_open; |
| 654 | dev->stop = ieee80211_stop; |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 655 | dev->destructor = free_netdev; |
Luis Carlos Cobo | bdbe819 | 2008-08-14 10:40:48 -0700 | [diff] [blame] | 656 | /* we will validate the address ourselves in ->open */ |
| 657 | dev->validate_addr = NULL; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 658 | } |
| 659 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 660 | /* everything else */ |
| 661 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 662 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 663 | { |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 664 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 665 | struct ieee80211_if_conf conf; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 666 | |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 667 | if (WARN_ON(!netif_running(sdata->dev))) |
| 668 | return 0; |
| 669 | |
| 670 | if (!local->ops->config_interface) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 671 | return 0; |
| 672 | |
| 673 | memset(&conf, 0, sizeof(conf)); |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 674 | conf.changed = changed; |
| 675 | |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 676 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
| 677 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 678 | conf.bssid = sdata->u.sta.bssid; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 679 | conf.ssid = sdata->u.sta.ssid; |
| 680 | conf.ssid_len = sdata->u.sta.ssid_len; |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 681 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 682 | conf.bssid = sdata->dev->dev_addr; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 683 | conf.ssid = sdata->u.ap.ssid; |
| 684 | conf.ssid_len = sdata->u.ap.ssid_len; |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 685 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 686 | u8 zero[ETH_ALEN] = { 0 }; |
| 687 | conf.bssid = zero; |
| 688 | conf.ssid = zero; |
| 689 | conf.ssid_len = 0; |
| 690 | } else { |
| 691 | WARN_ON(1); |
| 692 | return -EINVAL; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 693 | } |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 694 | |
| 695 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
| 696 | return -EINVAL; |
| 697 | |
| 698 | if (WARN_ON(!conf.ssid && (changed & IEEE80211_IFCC_SSID))) |
| 699 | return -EINVAL; |
| 700 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 701 | return local->ops->config_interface(local_to_hw(local), |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 702 | &sdata->vif, &conf); |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 703 | } |
| 704 | |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 705 | int ieee80211_hw_config(struct ieee80211_local *local) |
| 706 | { |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 707 | struct ieee80211_channel *chan; |
| 708 | int ret = 0; |
| 709 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 710 | if (local->sta_sw_scanning) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 711 | chan = local->scan_channel; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 712 | else |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 713 | chan = local->oper_channel; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 714 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 715 | local->hw.conf.channel = chan; |
| 716 | |
| 717 | if (!local->hw.conf.power_level) |
| 718 | local->hw.conf.power_level = chan->max_power; |
| 719 | else |
| 720 | local->hw.conf.power_level = min(chan->max_power, |
| 721 | local->hw.conf.power_level); |
| 722 | |
| 723 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 724 | |
| 725 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 726 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
| 727 | wiphy_name(local->hw.wiphy), chan->center_freq); |
| 728 | #endif |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 729 | |
Michael Buesch | f7c4dae | 2007-09-24 18:41:49 +0200 | [diff] [blame] | 730 | if (local->open_count) |
Johannes Berg | b2c258f | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 731 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
| 732 | |
| 733 | return ret; |
| 734 | } |
| 735 | |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 736 | /** |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 737 | * ieee80211_handle_ht should be used only after legacy configuration |
| 738 | * has been determined namely band, as ht configuration depends upon |
| 739 | * the hardware's HT abilities for a _specific_ band. |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 740 | */ |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 741 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 742 | struct ieee80211_ht_info *req_ht_cap, |
| 743 | struct ieee80211_ht_bss_info *req_bss_cap) |
| 744 | { |
| 745 | struct ieee80211_conf *conf = &local->hw.conf; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 746 | struct ieee80211_supported_band *sband; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 747 | struct ieee80211_ht_info ht_conf; |
| 748 | struct ieee80211_ht_bss_info ht_bss_conf; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 749 | u32 changed = 0; |
Ron Rindjunsky | edcdf8b | 2008-05-15 13:53:55 +0800 | [diff] [blame] | 750 | int i; |
| 751 | u8 max_tx_streams = IEEE80211_HT_CAP_MAX_STREAMS; |
| 752 | u8 tx_mcs_set_cap; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 753 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 754 | sband = local->hw.wiphy->bands[conf->channel->band]; |
| 755 | |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 756 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
| 757 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); |
| 758 | |
Ron Rindjunsky | edcdf8b | 2008-05-15 13:53:55 +0800 | [diff] [blame] | 759 | /* HT is not supported */ |
| 760 | if (!sband->ht_info.ht_supported) { |
| 761 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
| 762 | goto out; |
| 763 | } |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 764 | |
Ron Rindjunsky | edcdf8b | 2008-05-15 13:53:55 +0800 | [diff] [blame] | 765 | /* disable HT */ |
| 766 | if (!enable_ht) { |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 767 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) |
| 768 | changed |= BSS_CHANGED_HT; |
| 769 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
Ron Rindjunsky | edcdf8b | 2008-05-15 13:53:55 +0800 | [diff] [blame] | 770 | conf->ht_conf.ht_supported = 0; |
| 771 | goto out; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 772 | } |
| 773 | |
Ron Rindjunsky | edcdf8b | 2008-05-15 13:53:55 +0800 | [diff] [blame] | 774 | |
| 775 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) |
| 776 | changed |= BSS_CHANGED_HT; |
| 777 | |
| 778 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
| 779 | ht_conf.ht_supported = 1; |
| 780 | |
| 781 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
Tomas Winkler | 00c5ae2 | 2008-09-03 11:26:42 +0800 | [diff] [blame] | 782 | ht_conf.cap &= ~(IEEE80211_HT_CAP_SM_PS); |
| 783 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_SM_PS; |
Ron Rindjunsky | edcdf8b | 2008-05-15 13:53:55 +0800 | [diff] [blame] | 784 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; |
| 785 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; |
| 786 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; |
| 787 | |
| 788 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; |
| 789 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; |
| 790 | |
| 791 | /* Bits 96-100 */ |
| 792 | tx_mcs_set_cap = sband->ht_info.supp_mcs_set[12]; |
| 793 | |
| 794 | /* configure suppoerted Tx MCS according to requested MCS |
| 795 | * (based in most cases on Rx capabilities of peer) and self |
| 796 | * Tx MCS capabilities (as defined by low level driver HW |
| 797 | * Tx capabilities) */ |
| 798 | if (!(tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_DEFINED)) |
| 799 | goto check_changed; |
| 800 | |
| 801 | /* Counting from 0 therfore + 1 */ |
| 802 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_RX_DIFF) |
| 803 | max_tx_streams = ((tx_mcs_set_cap & |
| 804 | IEEE80211_HT_CAP_MCS_TX_STREAMS) >> 2) + 1; |
| 805 | |
| 806 | for (i = 0; i < max_tx_streams; i++) |
| 807 | ht_conf.supp_mcs_set[i] = |
| 808 | sband->ht_info.supp_mcs_set[i] & |
| 809 | req_ht_cap->supp_mcs_set[i]; |
| 810 | |
| 811 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_UEQM) |
| 812 | for (i = IEEE80211_SUPP_MCS_SET_UEQM; |
| 813 | i < IEEE80211_SUPP_MCS_SET_LEN; i++) |
| 814 | ht_conf.supp_mcs_set[i] = |
| 815 | sband->ht_info.supp_mcs_set[i] & |
| 816 | req_ht_cap->supp_mcs_set[i]; |
| 817 | |
| 818 | check_changed: |
| 819 | /* if bss configuration changed store the new one */ |
| 820 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || |
| 821 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { |
| 822 | changed |= BSS_CHANGED_HT; |
| 823 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); |
| 824 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); |
| 825 | } |
| 826 | out: |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 827 | return changed; |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 828 | } |
| 829 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 830 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| 831 | u32 changed) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 832 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 833 | struct ieee80211_local *local = sdata->local; |
| 834 | |
| 835 | if (!changed) |
| 836 | return; |
| 837 | |
| 838 | if (local->ops->bss_info_changed) |
| 839 | local->ops->bss_info_changed(local_to_hw(local), |
| 840 | &sdata->vif, |
| 841 | &sdata->bss_conf, |
| 842 | changed); |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 843 | } |
| 844 | |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 845 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 846 | { |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 847 | sdata->bss_conf.use_cts_prot = 0; |
| 848 | sdata->bss_conf.use_short_preamble = 0; |
Tomas Winkler | fc32f92 | 2008-07-03 01:27:13 +0300 | [diff] [blame] | 849 | return BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE; |
Daniel Drake | d9430a3 | 2007-07-27 15:43:24 +0200 | [diff] [blame] | 850 | } |
| 851 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 852 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 853 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 854 | { |
| 855 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 856 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 857 | int tmp; |
| 858 | |
| 859 | skb->dev = local->mdev; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 860 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 861 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 862 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
| 863 | tmp = skb_queue_len(&local->skb_queue) + |
| 864 | skb_queue_len(&local->skb_queue_unreliable); |
| 865 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| 866 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 867 | dev_kfree_skb_irq(skb); |
| 868 | tmp--; |
| 869 | I802_DEBUG_INC(local->tx_status_drop); |
| 870 | } |
| 871 | tasklet_schedule(&local->tasklet); |
| 872 | } |
| 873 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| 874 | |
| 875 | static void ieee80211_tasklet_handler(unsigned long data) |
| 876 | { |
| 877 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 878 | struct sk_buff *skb; |
| 879 | struct ieee80211_rx_status rx_status; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 880 | struct ieee80211_ra_tid *ra_tid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 881 | |
| 882 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 883 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 884 | switch (skb->pkt_type) { |
| 885 | case IEEE80211_RX_MSG: |
| 886 | /* status is in skb->cb */ |
| 887 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 888 | /* Clear skb->pkt_type in order to not confuse kernel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 889 | * netstack. */ |
| 890 | skb->pkt_type = 0; |
| 891 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); |
| 892 | break; |
| 893 | case IEEE80211_TX_STATUS_MSG: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 894 | skb->pkt_type = 0; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 895 | ieee80211_tx_status(local_to_hw(local), skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 896 | break; |
Ron Rindjunsky | eadc8d9 | 2008-01-28 14:07:17 +0200 | [diff] [blame] | 897 | case IEEE80211_DELBA_MSG: |
| 898 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 899 | ieee80211_stop_tx_ba_cb(local_to_hw(local), |
| 900 | ra_tid->ra, ra_tid->tid); |
| 901 | dev_kfree_skb(skb); |
| 902 | break; |
| 903 | case IEEE80211_ADDBA_MSG: |
| 904 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; |
| 905 | ieee80211_start_tx_ba_cb(local_to_hw(local), |
| 906 | ra_tid->ra, ra_tid->tid); |
| 907 | dev_kfree_skb(skb); |
| 908 | break ; |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 909 | default: |
| 910 | WARN_ON(1); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 911 | dev_kfree_skb(skb); |
| 912 | break; |
| 913 | } |
| 914 | } |
| 915 | } |
| 916 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 917 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
| 918 | * make a prepared TX frame (one that has been given to hw) to look like brand |
| 919 | * 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] | 920 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 921 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
| 922 | struct ieee80211_key *key, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 923 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 924 | { |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 925 | unsigned int hdrlen, iv_len, mic_len; |
| 926 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 927 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 928 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 929 | |
| 930 | if (!key) |
| 931 | goto no_key; |
| 932 | |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 933 | switch (key->conf.alg) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 934 | case ALG_WEP: |
| 935 | iv_len = WEP_IV_LEN; |
| 936 | mic_len = WEP_ICV_LEN; |
| 937 | break; |
| 938 | case ALG_TKIP: |
| 939 | iv_len = TKIP_IV_LEN; |
| 940 | mic_len = TKIP_ICV_LEN; |
| 941 | break; |
| 942 | case ALG_CCMP: |
| 943 | iv_len = CCMP_HDR_LEN; |
| 944 | mic_len = CCMP_MIC_LEN; |
| 945 | break; |
| 946 | default: |
| 947 | goto no_key; |
| 948 | } |
| 949 | |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 950 | if (skb->len >= hdrlen + mic_len && |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 951 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 952 | skb_trim(skb, skb->len - mic_len); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 953 | if (skb->len >= hdrlen + iv_len) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 954 | memmove(skb->data + iv_len, skb->data, hdrlen); |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 955 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | no_key: |
Harvey Harrison | 62bf1d7 | 2008-07-15 18:44:05 -0700 | [diff] [blame] | 959 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
| 960 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); |
| 961 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, |
| 962 | hdrlen - IEEE80211_QOS_CTL_LEN); |
| 963 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 964 | } |
| 965 | } |
| 966 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 967 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
| 968 | struct sta_info *sta, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 969 | struct sk_buff *skb) |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 970 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 971 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 972 | |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 973 | sta->tx_filtered_count++; |
| 974 | |
| 975 | /* |
| 976 | * Clear the TX filter mask for this STA when sending the next |
| 977 | * packet. If the STA went to power save mode, this will happen |
Yi Zhu | f6d9710 | 2008-05-27 17:50:50 +0300 | [diff] [blame] | 978 | * when it wakes up for the next time. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 979 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 980 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 981 | |
| 982 | /* |
| 983 | * This code races in the following way: |
| 984 | * |
| 985 | * (1) STA sends frame indicating it will go to sleep and does so |
| 986 | * (2) hardware/firmware adds STA to filter list, passes frame up |
| 987 | * (3) hardware/firmware processes TX fifo and suppresses a frame |
| 988 | * (4) we get TX status before having processed the frame and |
| 989 | * knowing that the STA has gone to sleep. |
| 990 | * |
| 991 | * This is actually quite unlikely even when both those events are |
| 992 | * processed from interrupts coming in quickly after one another or |
| 993 | * even at the same time because we queue both TX status events and |
| 994 | * RX frames to be processed by a tasklet and process them in the |
| 995 | * same order that they were received or TX status last. Hence, there |
| 996 | * is no race as long as the frame RX is processed before the next TX |
| 997 | * status, which drivers can ensure, see below. |
| 998 | * |
| 999 | * Note that this can only happen if the hardware or firmware can |
| 1000 | * actually add STAs to the filter list, if this is done by the |
| 1001 | * driver in response to set_tim() (which will only reduce the race |
| 1002 | * this whole filtering tries to solve, not completely solve it) |
| 1003 | * this situation cannot happen. |
| 1004 | * |
| 1005 | * To completely solve this race drivers need to make sure that they |
| 1006 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
| 1007 | * functions and |
| 1008 | * (b) always process RX events before TX status events if ordering |
| 1009 | * can be unknown, for example with different interrupt status |
| 1010 | * bits. |
| 1011 | */ |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1012 | if (test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1013 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1014 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1015 | skb_queue_tail(&sta->tx_filtered, skb); |
| 1016 | return; |
| 1017 | } |
| 1018 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1019 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1020 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1021 | /* Software retry the packet once */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1022 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
| 1023 | ieee80211_remove_tx_extra(local, sta->key, skb); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1024 | dev_queue_xmit(skb); |
| 1025 | return; |
| 1026 | } |
| 1027 | |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1028 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1029 | if (net_ratelimit()) |
| 1030 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " |
| 1031 | "queue_len=%d PS=%d @%lu\n", |
| 1032 | wiphy_name(local->hw.wiphy), |
| 1033 | skb_queue_len(&sta->tx_filtered), |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1034 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
Johannes Berg | f4ea83d | 2008-06-30 15:10:46 +0200 | [diff] [blame] | 1035 | #endif |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1036 | dev_kfree_skb(skb); |
| 1037 | } |
| 1038 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1039 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1040 | { |
| 1041 | struct sk_buff *skb2; |
| 1042 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 1043 | struct ieee80211_local *local = hw_to_local(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1044 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1045 | u16 frag, type; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1046 | __le16 fc; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1047 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
| 1048 | struct ieee80211_sub_if_data *sdata; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1049 | struct net_device *prev_dev = NULL; |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1050 | struct sta_info *sta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1051 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1052 | rcu_read_lock(); |
| 1053 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1054 | if (info->status.excessive_retries) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1055 | sta = sta_info_get(local, hdr->addr1); |
| 1056 | if (sta) { |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 1057 | if (test_sta_flags(sta, WLAN_STA_PS)) { |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1058 | /* |
| 1059 | * The STA is in power save mode, so assume |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1060 | * that this TX packet failed because of that. |
| 1061 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1062 | ieee80211_handle_filtered_frame(local, sta, skb); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1063 | rcu_read_unlock(); |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 1064 | return; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1065 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1066 | } |
| 1067 | } |
| 1068 | |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1069 | fc = hdr->frame_control; |
| 1070 | |
| 1071 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
| 1072 | (ieee80211_is_data_qos(fc))) { |
| 1073 | u16 tid, ssn; |
| 1074 | u8 *qc; |
| 1075 | sta = sta_info_get(local, hdr->addr1); |
| 1076 | if (sta) { |
| 1077 | qc = ieee80211_get_qos_ctl(hdr); |
| 1078 | tid = qc[0] & 0xf; |
| 1079 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
| 1080 | & IEEE80211_SCTL_SEQ); |
Jasper Bryant-Greene | f698d85 | 2008-08-03 12:04:37 +1200 | [diff] [blame] | 1081 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 1082 | tid, ssn); |
| 1083 | } |
| 1084 | } |
| 1085 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1086 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1087 | sta = sta_info_get(local, hdr->addr1); |
| 1088 | if (sta) { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1089 | ieee80211_handle_filtered_frame(local, sta, skb); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1090 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1091 | return; |
| 1092 | } |
Mattias Nissler | 1abbe49 | 2007-12-20 13:50:07 +0100 | [diff] [blame] | 1093 | } else |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1094 | rate_control_tx_status(local->mdev, skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1095 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1096 | rcu_read_unlock(); |
| 1097 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1098 | ieee80211_led_tx(local, 0); |
| 1099 | |
| 1100 | /* SNMP counters |
| 1101 | * Fragments are passed to low-level drivers as separate skbs, so these |
| 1102 | * are actually fragments, not frames. Update frame counters only for |
| 1103 | * the first fragment of the frame. */ |
| 1104 | |
| 1105 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
| 1106 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; |
| 1107 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1108 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1109 | if (frag == 0) { |
| 1110 | local->dot11TransmittedFrameCount++; |
| 1111 | if (is_multicast_ether_addr(hdr->addr1)) |
| 1112 | local->dot11MulticastTransmittedFrameCount++; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1113 | if (info->status.retry_count > 0) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1114 | local->dot11RetryCount++; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1115 | if (info->status.retry_count > 1) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1116 | local->dot11MultipleRetryCount++; |
| 1117 | } |
| 1118 | |
| 1119 | /* This counter shall be incremented for an acknowledged MPDU |
| 1120 | * with an individual address in the address 1 field or an MPDU |
| 1121 | * with a multicast address in the address 1 field of type Data |
| 1122 | * or Management. */ |
| 1123 | if (!is_multicast_ether_addr(hdr->addr1) || |
| 1124 | type == IEEE80211_FTYPE_DATA || |
| 1125 | type == IEEE80211_FTYPE_MGMT) |
| 1126 | local->dot11TransmittedFragmentCount++; |
| 1127 | } else { |
| 1128 | if (frag == 0) |
| 1129 | local->dot11FailedCount++; |
| 1130 | } |
| 1131 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1132 | /* this was a transmitted frame, but now we want to reuse it */ |
| 1133 | skb_orphan(skb); |
| 1134 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1135 | /* |
| 1136 | * This is a bit racy but we can avoid a lot of work |
| 1137 | * with this test... |
| 1138 | */ |
| 1139 | if (!local->monitors && !local->cooked_mntrs) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1140 | dev_kfree_skb(skb); |
| 1141 | return; |
| 1142 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1143 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1144 | /* send frame to monitor interfaces now */ |
| 1145 | |
| 1146 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
| 1147 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); |
| 1148 | dev_kfree_skb(skb); |
| 1149 | return; |
| 1150 | } |
| 1151 | |
Johannes Berg | 988c0f7 | 2008-04-17 19:21:22 +0200 | [diff] [blame] | 1152 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1153 | skb_push(skb, sizeof(*rthdr)); |
| 1154 | |
| 1155 | memset(rthdr, 0, sizeof(*rthdr)); |
| 1156 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); |
| 1157 | rthdr->hdr.it_present = |
| 1158 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | |
| 1159 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); |
| 1160 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1161 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1162 | !is_multicast_ether_addr(hdr->addr1)) |
| 1163 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); |
| 1164 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1165 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
| 1166 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1167 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1168 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1169 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
| 1170 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1171 | rthdr->data_retries = info->status.retry_count; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1172 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1173 | /* XXX: is this sufficient for BPF? */ |
| 1174 | skb_set_mac_header(skb, 0); |
| 1175 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1176 | skb->pkt_type = PACKET_OTHERHOST; |
| 1177 | skb->protocol = htons(ETH_P_802_2); |
| 1178 | memset(skb->cb, 0, sizeof(skb->cb)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1179 | |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1180 | rcu_read_lock(); |
| 1181 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 1182 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1183 | if (!netif_running(sdata->dev)) |
| 1184 | continue; |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1185 | |
| 1186 | if (prev_dev) { |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1187 | skb2 = skb_clone(skb, GFP_ATOMIC); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1188 | if (skb2) { |
| 1189 | skb2->dev = prev_dev; |
| 1190 | netif_rx(skb2); |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | prev_dev = sdata->dev; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1195 | } |
| 1196 | } |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1197 | if (prev_dev) { |
| 1198 | skb->dev = prev_dev; |
| 1199 | netif_rx(skb); |
| 1200 | skb = NULL; |
| 1201 | } |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1202 | rcu_read_unlock(); |
Michael Wu | 3d30d94 | 2008-01-31 19:48:27 +0100 | [diff] [blame] | 1203 | dev_kfree_skb(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1204 | } |
| 1205 | EXPORT_SYMBOL(ieee80211_tx_status); |
| 1206 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1207 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1208 | const struct ieee80211_ops *ops) |
| 1209 | { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1210 | struct ieee80211_local *local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1211 | int priv_size; |
| 1212 | struct wiphy *wiphy; |
| 1213 | |
| 1214 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 1215 | * We use the wiphy priv data for both our ieee80211_local and for |
| 1216 | * the driver's private data |
| 1217 | * |
| 1218 | * In memory it'll be like this: |
| 1219 | * |
| 1220 | * +-------------------------+ |
| 1221 | * | struct wiphy | |
| 1222 | * +-------------------------+ |
| 1223 | * | struct ieee80211_local | |
| 1224 | * +-------------------------+ |
| 1225 | * | driver's private data | |
| 1226 | * +-------------------------+ |
| 1227 | * |
| 1228 | */ |
| 1229 | priv_size = ((sizeof(struct ieee80211_local) + |
| 1230 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + |
| 1231 | priv_data_len; |
| 1232 | |
| 1233 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); |
| 1234 | |
| 1235 | if (!wiphy) |
| 1236 | return NULL; |
| 1237 | |
| 1238 | wiphy->privid = mac80211_wiphy_privid; |
| 1239 | |
| 1240 | local = wiphy_priv(wiphy); |
| 1241 | local->hw.wiphy = wiphy; |
| 1242 | |
| 1243 | local->hw.priv = (char *)local + |
| 1244 | ((sizeof(struct ieee80211_local) + |
| 1245 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); |
| 1246 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 1247 | BUG_ON(!ops->tx); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1248 | BUG_ON(!ops->start); |
| 1249 | BUG_ON(!ops->stop); |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 1250 | BUG_ON(!ops->config); |
| 1251 | BUG_ON(!ops->add_interface); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1252 | BUG_ON(!ops->remove_interface); |
| 1253 | BUG_ON(!ops->configure_filter); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1254 | local->ops = ops; |
| 1255 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1256 | local->hw.queues = 1; /* default */ |
| 1257 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1258 | local->bridge_packets = 1; |
| 1259 | |
| 1260 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
| 1261 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; |
| 1262 | local->short_retry_limit = 7; |
| 1263 | local->long_retry_limit = 4; |
| 1264 | local->hw.conf.radio_enabled = 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1265 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1266 | INIT_LIST_HEAD(&local->interfaces); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1267 | |
Johannes Berg | b16bd15 | 2008-04-11 21:40:35 +0200 | [diff] [blame] | 1268 | spin_lock_init(&local->key_lock); |
| 1269 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1270 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1271 | |
| 1272 | sta_info_init(local); |
| 1273 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1274 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 1275 | (unsigned long)local); |
| 1276 | tasklet_disable(&local->tx_pending_tasklet); |
| 1277 | |
| 1278 | tasklet_init(&local->tasklet, |
| 1279 | ieee80211_tasklet_handler, |
| 1280 | (unsigned long) local); |
| 1281 | tasklet_disable(&local->tasklet); |
| 1282 | |
| 1283 | skb_queue_head_init(&local->skb_queue); |
| 1284 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 1285 | |
| 1286 | return local_to_hw(local); |
| 1287 | } |
| 1288 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 1289 | |
| 1290 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 1291 | { |
| 1292 | struct ieee80211_local *local = hw_to_local(hw); |
| 1293 | const char *name; |
| 1294 | int result; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1295 | enum ieee80211_band band; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 1296 | struct net_device *mdev; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1297 | struct wireless_dev *mwdev; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1298 | |
| 1299 | /* |
| 1300 | * generic code guarantees at least one band, |
| 1301 | * set this very early because much code assumes |
| 1302 | * that hw.conf.channel is assigned |
| 1303 | */ |
| 1304 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 1305 | struct ieee80211_supported_band *sband; |
| 1306 | |
| 1307 | sband = local->hw.wiphy->bands[band]; |
| 1308 | if (sband) { |
| 1309 | /* init channel we're on */ |
| 1310 | local->hw.conf.channel = |
| 1311 | local->oper_channel = |
| 1312 | local->scan_channel = &sband->channels[0]; |
| 1313 | break; |
| 1314 | } |
| 1315 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1316 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 1317 | /* if low-level driver supports AP, we also support VLAN */ |
| 1318 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) |
| 1319 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| 1320 | |
| 1321 | /* mac80211 always supports monitor */ |
| 1322 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| 1323 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1324 | result = wiphy_register(local->hw.wiphy); |
| 1325 | if (result < 0) |
| 1326 | return result; |
| 1327 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 1328 | /* |
| 1329 | * We use the number of queues for feature tests (QoS, HT) internally |
| 1330 | * so restrict them appropriately. |
| 1331 | */ |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 1332 | if (hw->queues > IEEE80211_MAX_QUEUES) |
| 1333 | hw->queues = IEEE80211_MAX_QUEUES; |
| 1334 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) |
| 1335 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; |
| 1336 | if (hw->queues < 4) |
| 1337 | hw->ampdu_queues = 0; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 1338 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1339 | mdev = alloc_netdev_mq(sizeof(struct wireless_dev), |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 1340 | "wmaster%d", ether_setup, |
| 1341 | ieee80211_num_queues(hw)); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 1342 | if (!mdev) |
| 1343 | goto fail_mdev_alloc; |
| 1344 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1345 | mwdev = netdev_priv(mdev); |
| 1346 | mdev->ieee80211_ptr = mwdev; |
| 1347 | mwdev->wiphy = local->hw.wiphy; |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 1348 | |
| 1349 | local->mdev = mdev; |
| 1350 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1351 | ieee80211_rx_bss_list_init(local); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 1352 | |
| 1353 | mdev->hard_start_xmit = ieee80211_master_start_xmit; |
| 1354 | mdev->open = ieee80211_master_open; |
| 1355 | mdev->stop = ieee80211_master_stop; |
| 1356 | mdev->type = ARPHRD_IEEE80211; |
| 1357 | mdev->header_ops = &ieee80211_header_ops; |
| 1358 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; |
| 1359 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1360 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
Johannes Berg | 59959a6 | 2008-06-26 19:59:56 +0200 | [diff] [blame] | 1361 | local->hw.workqueue = create_freezeable_workqueue(name); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1362 | if (!local->hw.workqueue) { |
| 1363 | result = -ENOMEM; |
| 1364 | goto fail_workqueue; |
| 1365 | } |
| 1366 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1367 | /* |
| 1368 | * The hardware needs headroom for sending the frame, |
| 1369 | * and we need some headroom for passing the frame to monitor |
| 1370 | * interfaces, but never both at the same time. |
| 1371 | */ |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 1372 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 1373 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1374 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1375 | debugfs_hw_add(local); |
| 1376 | |
Tomas Winkler | dc0ae30 | 2008-06-12 22:38:37 +0300 | [diff] [blame] | 1377 | if (local->hw.conf.beacon_int < 10) |
| 1378 | local->hw.conf.beacon_int = 100; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1379 | |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1380 | if (local->hw.max_listen_interval == 0) |
| 1381 | local->hw.max_listen_interval = 1; |
| 1382 | |
| 1383 | local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| 1384 | |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1385 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
| 1386 | IEEE80211_HW_SIGNAL_DB | |
| 1387 | IEEE80211_HW_SIGNAL_DBM) ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1388 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1389 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1390 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1391 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1392 | local->wstats_flags |= IW_QUAL_DBM; |
| 1393 | |
| 1394 | result = sta_info_start(local); |
| 1395 | if (result < 0) |
| 1396 | goto fail_sta_info; |
| 1397 | |
| 1398 | rtnl_lock(); |
| 1399 | result = dev_alloc_name(local->mdev, local->mdev->name); |
| 1400 | if (result < 0) |
| 1401 | goto fail_dev; |
| 1402 | |
| 1403 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
| 1404 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); |
| 1405 | |
| 1406 | result = register_netdevice(local->mdev); |
| 1407 | if (result < 0) |
| 1408 | goto fail_dev; |
| 1409 | |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 1410 | result = ieee80211_init_rate_ctrl_alg(local, |
| 1411 | hw->rate_control_algorithm); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1412 | if (result < 0) { |
| 1413 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1414 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1415 | goto fail_rate; |
| 1416 | } |
| 1417 | |
| 1418 | result = ieee80211_wep_init(local); |
| 1419 | |
| 1420 | if (result < 0) { |
Jeremy Fitzhardinge | 023a04b | 2008-07-14 12:52:08 -0700 | [diff] [blame] | 1421 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
| 1422 | wiphy_name(local->hw.wiphy), result); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1423 | goto fail_wep; |
| 1424 | } |
| 1425 | |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 1426 | local->mdev->select_queue = ieee80211_select_queue; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1427 | |
| 1428 | /* add one default STA interface */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1429 | result = ieee80211_if_add(local, "wlan%d", NULL, |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 1430 | IEEE80211_IF_TYPE_STA, NULL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1431 | if (result) |
| 1432 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1433 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1434 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1435 | rtnl_unlock(); |
| 1436 | |
| 1437 | ieee80211_led_init(local); |
| 1438 | |
| 1439 | return 0; |
| 1440 | |
| 1441 | fail_wep: |
| 1442 | rate_control_deinitialize(local); |
| 1443 | fail_rate: |
| 1444 | unregister_netdevice(local->mdev); |
Pavel Emelyanov | 339a7c4 | 2008-05-04 17:59:30 -0700 | [diff] [blame] | 1445 | local->mdev = NULL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1446 | fail_dev: |
| 1447 | rtnl_unlock(); |
| 1448 | sta_info_stop(local); |
| 1449 | fail_sta_info: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1450 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1451 | destroy_workqueue(local->hw.workqueue); |
| 1452 | fail_workqueue: |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1453 | if (local->mdev) |
| 1454 | free_netdev(local->mdev); |
Johannes Berg | 96d5105 | 2008-02-08 09:48:13 +0100 | [diff] [blame] | 1455 | fail_mdev_alloc: |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1456 | wiphy_unregister(local->hw.wiphy); |
| 1457 | return result; |
| 1458 | } |
| 1459 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 1460 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1461 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 1462 | { |
| 1463 | struct ieee80211_local *local = hw_to_local(hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1464 | |
| 1465 | tasklet_kill(&local->tx_pending_tasklet); |
| 1466 | tasklet_kill(&local->tasklet); |
| 1467 | |
| 1468 | rtnl_lock(); |
| 1469 | |
Johannes Berg | 7901042 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1470 | /* |
| 1471 | * At this point, interface list manipulations are fine |
| 1472 | * because the driver cannot be handing us frames any |
| 1473 | * more and the tasklet is killed. |
| 1474 | */ |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 1475 | |
Johannes Berg | 7563652 | 2008-07-09 14:40:35 +0200 | [diff] [blame] | 1476 | /* First, we remove all virtual interfaces. */ |
| 1477 | ieee80211_remove_interfaces(local); |
Johannes Berg | 5b2812e | 2007-09-26 14:27:23 +0200 | [diff] [blame] | 1478 | |
| 1479 | /* then, finally, remove the master interface */ |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1480 | unregister_netdevice(local->mdev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1481 | |
| 1482 | rtnl_unlock(); |
| 1483 | |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1484 | ieee80211_rx_bss_list_deinit(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1485 | ieee80211_clear_tx_pending(local); |
| 1486 | sta_info_stop(local); |
| 1487 | rate_control_deinitialize(local); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1488 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1489 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1490 | if (skb_queue_len(&local->skb_queue) |
| 1491 | || skb_queue_len(&local->skb_queue_unreliable)) |
| 1492 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
Johannes Berg | dd1cd4c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1493 | wiphy_name(local->hw.wiphy)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1494 | skb_queue_purge(&local->skb_queue); |
| 1495 | skb_queue_purge(&local->skb_queue_unreliable); |
| 1496 | |
| 1497 | destroy_workqueue(local->hw.workqueue); |
| 1498 | wiphy_unregister(local->hw.wiphy); |
| 1499 | ieee80211_wep_free(local); |
| 1500 | ieee80211_led_exit(local); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 1501 | free_netdev(local->mdev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1502 | } |
| 1503 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 1504 | |
| 1505 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 1506 | { |
| 1507 | struct ieee80211_local *local = hw_to_local(hw); |
| 1508 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1509 | wiphy_free(local->hw.wiphy); |
| 1510 | } |
| 1511 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 1512 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1513 | static int __init ieee80211_init(void) |
| 1514 | { |
| 1515 | struct sk_buff *skb; |
| 1516 | int ret; |
| 1517 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1518 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| 1519 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
| 1520 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1521 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 1522 | ret = rc80211_pid_init(); |
Mattias Nissler | ad01837 | 2007-12-19 01:25:57 +0100 | [diff] [blame] | 1523 | if (ret) |
David S. Miller | 51cb6db | 2008-07-15 03:34:57 -0700 | [diff] [blame] | 1524 | return ret; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1525 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1526 | ieee80211_debugfs_netdev_init(); |
| 1527 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1528 | return 0; |
| 1529 | } |
| 1530 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1531 | static void __exit ieee80211_exit(void) |
| 1532 | { |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 1533 | rc80211_pid_exit(); |
Johannes Berg | ac71c69 | 2007-10-28 14:17:44 +0100 | [diff] [blame] | 1534 | |
Johannes Berg | 3b96766 | 2008-04-08 17:56:52 +0200 | [diff] [blame] | 1535 | /* |
| 1536 | * For key todo, it'll be empty by now but the work |
| 1537 | * might still be scheduled. |
| 1538 | */ |
| 1539 | flush_scheduled_work(); |
| 1540 | |
Luis Carlos Cobo | f7a9214 | 2008-02-23 15:17:18 +0100 | [diff] [blame] | 1541 | if (mesh_allocated) |
| 1542 | ieee80211s_stop(); |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 1543 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1544 | ieee80211_debugfs_netdev_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1545 | } |
| 1546 | |
| 1547 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 1548 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1549 | module_exit(ieee80211_exit); |
| 1550 | |
| 1551 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 1552 | MODULE_LICENSE("GPL"); |