Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2 | /* |
| 3 | * Intersil Prism2 driver with Host AP (software access point) support |
| 4 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen |
Jouni Malinen | 85d32e7 | 2007-03-24 17:15:30 -0700 | [diff] [blame] | 5 | * <j@w1.fi> |
| 6 | * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 7 | * |
| 8 | * This file is to be included into hostap.c when S/W AP functionality is |
| 9 | * compiled. |
| 10 | * |
| 11 | * AP: FIX: |
| 12 | * - if unicast Class 2 (assoc,reassoc,disassoc) frame received from |
| 13 | * unauthenticated STA, send deauth. frame (8802.11: 5.5) |
| 14 | * - if unicast Class 3 (data with to/from DS,deauth,pspoll) frame received |
| 15 | * from authenticated, but unassoc STA, send disassoc frame (8802.11: 5.5) |
| 16 | * - if unicast Class 3 received from unauthenticated STA, send deauth. frame |
| 17 | * (8802.11: 5.5) |
| 18 | */ |
| 19 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 20 | #include <linux/proc_fs.h> |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 21 | #include <linux/seq_file.h> |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 22 | #include <linux/delay.h> |
| 23 | #include <linux/random.h> |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 24 | #include <linux/if_arp.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 25 | #include <linux/slab.h> |
Paul Gortmaker | ee40fa0 | 2011-05-27 16:14:23 -0400 | [diff] [blame] | 26 | #include <linux/export.h> |
Paul Gortmaker | 6eb07ca | 2011-09-15 19:46:05 -0400 | [diff] [blame] | 27 | #include <linux/moduleparam.h> |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 28 | #include <linux/etherdevice.h> |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 29 | |
| 30 | #include "hostap_wlan.h" |
| 31 | #include "hostap.h" |
| 32 | #include "hostap_ap.h" |
| 33 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 34 | static int other_ap_policy[MAX_PARM_DEVICES] = { AP_OTHER_AP_SKIP_ALL, |
| 35 | DEF_INTS }; |
| 36 | module_param_array(other_ap_policy, int, NULL, 0444); |
| 37 | MODULE_PARM_DESC(other_ap_policy, "Other AP beacon monitoring policy (0-3)"); |
| 38 | |
| 39 | static int ap_max_inactivity[MAX_PARM_DEVICES] = { AP_MAX_INACTIVITY_SEC, |
| 40 | DEF_INTS }; |
| 41 | module_param_array(ap_max_inactivity, int, NULL, 0444); |
| 42 | MODULE_PARM_DESC(ap_max_inactivity, "AP timeout (in seconds) for station " |
| 43 | "inactivity"); |
| 44 | |
| 45 | static int ap_bridge_packets[MAX_PARM_DEVICES] = { 1, DEF_INTS }; |
| 46 | module_param_array(ap_bridge_packets, int, NULL, 0444); |
| 47 | MODULE_PARM_DESC(ap_bridge_packets, "Bridge packets directly between " |
| 48 | "stations"); |
| 49 | |
| 50 | static int autom_ap_wds[MAX_PARM_DEVICES] = { 0, DEF_INTS }; |
| 51 | module_param_array(autom_ap_wds, int, NULL, 0444); |
| 52 | MODULE_PARM_DESC(autom_ap_wds, "Add WDS connections to other APs " |
| 53 | "automatically"); |
| 54 | |
| 55 | |
| 56 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta); |
| 57 | static void hostap_event_expired_sta(struct net_device *dev, |
| 58 | struct sta_info *sta); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 59 | static void handle_add_proc_queue(struct work_struct *work); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 60 | |
| 61 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 62 | static void handle_wds_oper_queue(struct work_struct *work); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 63 | static void prism2_send_mgmt(struct net_device *dev, |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 64 | u16 type_subtype, char *body, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 65 | int body_len, u8 *addr, u16 tx_cb_idx); |
| 66 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 67 | |
| 68 | |
| 69 | #ifndef PRISM2_NO_PROCFS_DEBUG |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 70 | static int ap_debug_proc_show(struct seq_file *m, void *v) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 71 | { |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 72 | struct ap_data *ap = m->private; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 73 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 74 | seq_printf(m, "BridgedUnicastFrames=%u\n", ap->bridged_unicast); |
| 75 | seq_printf(m, "BridgedMulticastFrames=%u\n", ap->bridged_multicast); |
| 76 | seq_printf(m, "max_inactivity=%u\n", ap->max_inactivity / HZ); |
| 77 | seq_printf(m, "bridge_packets=%u\n", ap->bridge_packets); |
| 78 | seq_printf(m, "nullfunc_ack=%u\n", ap->nullfunc_ack); |
| 79 | seq_printf(m, "autom_ap_wds=%u\n", ap->autom_ap_wds); |
| 80 | seq_printf(m, "auth_algs=%u\n", ap->local->auth_algs); |
| 81 | seq_printf(m, "tx_drop_nonassoc=%u\n", ap->tx_drop_nonassoc); |
| 82 | return 0; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 83 | } |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 84 | |
| 85 | static int ap_debug_proc_open(struct inode *inode, struct file *file) |
| 86 | { |
| 87 | return single_open(file, ap_debug_proc_show, PDE_DATA(inode)); |
| 88 | } |
| 89 | |
| 90 | static const struct file_operations ap_debug_proc_fops = { |
| 91 | .open = ap_debug_proc_open, |
| 92 | .read = seq_read, |
| 93 | .llseek = seq_lseek, |
Al Viro | bc3041f | 2013-05-05 00:13:20 -0400 | [diff] [blame] | 94 | .release = single_release, |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 95 | }; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 96 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
| 97 | |
| 98 | |
| 99 | static void ap_sta_hash_add(struct ap_data *ap, struct sta_info *sta) |
| 100 | { |
| 101 | sta->hnext = ap->sta_hash[STA_HASH(sta->addr)]; |
| 102 | ap->sta_hash[STA_HASH(sta->addr)] = sta; |
| 103 | } |
| 104 | |
| 105 | static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta) |
| 106 | { |
| 107 | struct sta_info *s; |
| 108 | |
| 109 | s = ap->sta_hash[STA_HASH(sta->addr)]; |
| 110 | if (s == NULL) return; |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 111 | if (ether_addr_equal(s->addr, sta->addr)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 112 | ap->sta_hash[STA_HASH(sta->addr)] = s->hnext; |
| 113 | return; |
| 114 | } |
| 115 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 116 | while (s->hnext != NULL && !ether_addr_equal(s->hnext->addr, sta->addr)) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 117 | s = s->hnext; |
| 118 | if (s->hnext != NULL) |
| 119 | s->hnext = s->hnext->hnext; |
| 120 | else |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 121 | printk("AP: could not remove STA %pM from hash table\n", |
| 122 | sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) |
| 126 | { |
| 127 | if (sta->ap && sta->local) |
| 128 | hostap_event_expired_sta(sta->local->dev, sta); |
| 129 | |
| 130 | if (ap->proc != NULL) { |
| 131 | char name[20]; |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 132 | sprintf(name, "%pM", sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 133 | remove_proc_entry(name, ap->proc); |
| 134 | } |
| 135 | |
| 136 | if (sta->crypt) { |
| 137 | sta->crypt->ops->deinit(sta->crypt->priv); |
| 138 | kfree(sta->crypt); |
| 139 | sta->crypt = NULL; |
| 140 | } |
| 141 | |
| 142 | skb_queue_purge(&sta->tx_buf); |
| 143 | |
| 144 | ap->num_sta--; |
| 145 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 146 | if (sta->aid > 0) |
| 147 | ap->sta_aid[sta->aid - 1] = NULL; |
| 148 | |
Markus Elfring | 6f24fe3 | 2015-02-04 20:06:39 +0100 | [diff] [blame] | 149 | if (!sta->ap) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 150 | kfree(sta->u.sta.challenge); |
Kirill Tkhai | 72471c0 | 2014-02-14 16:17:49 +0400 | [diff] [blame] | 151 | del_timer_sync(&sta->timer); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 152 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 153 | |
| 154 | kfree(sta); |
| 155 | } |
| 156 | |
| 157 | |
| 158 | static void hostap_set_tim(local_info_t *local, int aid, int set) |
| 159 | { |
| 160 | if (local->func->set_tim) |
| 161 | local->func->set_tim(local->dev, aid, set); |
| 162 | } |
| 163 | |
| 164 | |
| 165 | static void hostap_event_new_sta(struct net_device *dev, struct sta_info *sta) |
| 166 | { |
| 167 | union iwreq_data wrqu; |
| 168 | memset(&wrqu, 0, sizeof(wrqu)); |
| 169 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); |
| 170 | wrqu.addr.sa_family = ARPHRD_ETHER; |
| 171 | wireless_send_event(dev, IWEVREGISTERED, &wrqu, NULL); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | static void hostap_event_expired_sta(struct net_device *dev, |
| 176 | struct sta_info *sta) |
| 177 | { |
| 178 | union iwreq_data wrqu; |
| 179 | memset(&wrqu, 0, sizeof(wrqu)); |
| 180 | memcpy(wrqu.addr.sa_data, sta->addr, ETH_ALEN); |
| 181 | wrqu.addr.sa_family = ARPHRD_ETHER; |
| 182 | wireless_send_event(dev, IWEVEXPIRED, &wrqu, NULL); |
| 183 | } |
| 184 | |
| 185 | |
| 186 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 187 | |
Kees Cook | e99e88a | 2017-10-16 14:43:17 -0700 | [diff] [blame] | 188 | static void ap_handle_timer(struct timer_list *t) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 189 | { |
Kees Cook | e99e88a | 2017-10-16 14:43:17 -0700 | [diff] [blame] | 190 | struct sta_info *sta = from_timer(sta, t, timer); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 191 | local_info_t *local; |
| 192 | struct ap_data *ap; |
| 193 | unsigned long next_time = 0; |
| 194 | int was_assoc; |
| 195 | |
| 196 | if (sta == NULL || sta->local == NULL || sta->local->ap == NULL) { |
| 197 | PDEBUG(DEBUG_AP, "ap_handle_timer() called with NULL data\n"); |
| 198 | return; |
| 199 | } |
| 200 | |
| 201 | local = sta->local; |
| 202 | ap = local->ap; |
| 203 | was_assoc = sta->flags & WLAN_STA_ASSOC; |
| 204 | |
| 205 | if (atomic_read(&sta->users) != 0) |
| 206 | next_time = jiffies + HZ; |
| 207 | else if ((sta->flags & WLAN_STA_PERM) && !(sta->flags & WLAN_STA_AUTH)) |
| 208 | next_time = jiffies + ap->max_inactivity; |
| 209 | |
| 210 | if (time_before(jiffies, sta->last_rx + ap->max_inactivity)) { |
| 211 | /* station activity detected; reset timeout state */ |
| 212 | sta->timeout_next = STA_NULLFUNC; |
| 213 | next_time = sta->last_rx + ap->max_inactivity; |
| 214 | } else if (sta->timeout_next == STA_DISASSOC && |
| 215 | !(sta->flags & WLAN_STA_PENDING_POLL)) { |
| 216 | /* STA ACKed data nullfunc frame poll */ |
| 217 | sta->timeout_next = STA_NULLFUNC; |
| 218 | next_time = jiffies + ap->max_inactivity; |
| 219 | } |
| 220 | |
| 221 | if (next_time) { |
| 222 | sta->timer.expires = next_time; |
| 223 | add_timer(&sta->timer); |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | if (sta->ap) |
| 228 | sta->timeout_next = STA_DEAUTH; |
| 229 | |
| 230 | if (sta->timeout_next == STA_DEAUTH && !(sta->flags & WLAN_STA_PERM)) { |
| 231 | spin_lock(&ap->sta_table_lock); |
| 232 | ap_sta_hash_del(ap, sta); |
| 233 | list_del(&sta->list); |
| 234 | spin_unlock(&ap->sta_table_lock); |
| 235 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); |
| 236 | } else if (sta->timeout_next == STA_DISASSOC) |
| 237 | sta->flags &= ~WLAN_STA_ASSOC; |
| 238 | |
| 239 | if (was_assoc && !(sta->flags & WLAN_STA_ASSOC) && !sta->ap) |
| 240 | hostap_event_expired_sta(local->dev, sta); |
| 241 | |
| 242 | if (sta->timeout_next == STA_DEAUTH && sta->aid > 0 && |
| 243 | !skb_queue_empty(&sta->tx_buf)) { |
| 244 | hostap_set_tim(local, sta->aid, 0); |
| 245 | sta->flags &= ~WLAN_STA_TIM; |
| 246 | } |
| 247 | |
| 248 | if (sta->ap) { |
| 249 | if (ap->autom_ap_wds) { |
| 250 | PDEBUG(DEBUG_AP, "%s: removing automatic WDS " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 251 | "connection to AP %pM\n", |
| 252 | local->dev->name, sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 253 | hostap_wds_link_oper(local, sta->addr, WDS_DEL); |
| 254 | } |
| 255 | } else if (sta->timeout_next == STA_NULLFUNC) { |
| 256 | /* send data frame to poll STA and check whether this frame |
| 257 | * is ACKed */ |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 258 | /* FIX: IEEE80211_STYPE_NULLFUNC would be more appropriate, but |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 259 | * it is apparently not retried so TX Exc events are not |
| 260 | * received for it */ |
| 261 | sta->flags |= WLAN_STA_PENDING_POLL; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 262 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_DATA | |
| 263 | IEEE80211_STYPE_DATA, NULL, 0, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 264 | sta->addr, ap->tx_callback_poll); |
| 265 | } else { |
| 266 | int deauth = sta->timeout_next == STA_DEAUTH; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 267 | __le16 resp; |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 268 | PDEBUG(DEBUG_AP, "%s: sending %s info to STA %pM" |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 269 | "(last=%lu, jiffies=%lu)\n", |
| 270 | local->dev->name, |
| 271 | deauth ? "deauthentication" : "disassociation", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 272 | sta->addr, sta->last_rx, jiffies); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 273 | |
| 274 | resp = cpu_to_le16(deauth ? WLAN_REASON_PREV_AUTH_NOT_VALID : |
| 275 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 276 | prism2_send_mgmt(local->dev, IEEE80211_FTYPE_MGMT | |
| 277 | (deauth ? IEEE80211_STYPE_DEAUTH : |
| 278 | IEEE80211_STYPE_DISASSOC), |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 279 | (char *) &resp, 2, sta->addr, 0); |
| 280 | } |
| 281 | |
| 282 | if (sta->timeout_next == STA_DEAUTH) { |
| 283 | if (sta->flags & WLAN_STA_PERM) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 284 | PDEBUG(DEBUG_AP, "%s: STA %pM" |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 285 | " would have been removed, " |
| 286 | "but it has 'perm' flag\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 287 | local->dev->name, sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 288 | } else |
| 289 | ap_free_sta(ap, sta); |
| 290 | return; |
| 291 | } |
| 292 | |
| 293 | if (sta->timeout_next == STA_NULLFUNC) { |
| 294 | sta->timeout_next = STA_DISASSOC; |
| 295 | sta->timer.expires = jiffies + AP_DISASSOC_DELAY; |
| 296 | } else { |
| 297 | sta->timeout_next = STA_DEAUTH; |
| 298 | sta->timer.expires = jiffies + AP_DEAUTH_DELAY; |
| 299 | } |
| 300 | |
| 301 | add_timer(&sta->timer); |
| 302 | } |
| 303 | |
| 304 | |
| 305 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, |
| 306 | int resend) |
| 307 | { |
| 308 | u8 addr[ETH_ALEN]; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 309 | __le16 resp; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 310 | int i; |
| 311 | |
| 312 | PDEBUG(DEBUG_AP, "%s: Deauthenticate all stations\n", dev->name); |
Joe Perches | 93803b3 | 2015-03-02 19:54:49 -0800 | [diff] [blame] | 313 | eth_broadcast_addr(addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 314 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 315 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 316 | |
| 317 | /* deauth message sent; try to resend it few times; the message is |
| 318 | * broadcast, so it may be delayed until next DTIM; there is not much |
| 319 | * else we can do at this point since the driver is going to be shut |
| 320 | * down */ |
| 321 | for (i = 0; i < 5; i++) { |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 322 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
| 323 | IEEE80211_STYPE_DEAUTH, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 324 | (char *) &resp, 2, addr, 0); |
| 325 | |
| 326 | if (!resend || ap->num_sta <= 0) |
| 327 | return; |
| 328 | |
| 329 | mdelay(50); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 334 | static int ap_control_proc_show(struct seq_file *m, void *v) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 335 | { |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 336 | struct ap_data *ap = m->private; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 337 | char *policy_txt; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 338 | struct mac_entry *entry; |
| 339 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 340 | if (v == SEQ_START_TOKEN) { |
| 341 | switch (ap->mac_restrictions.policy) { |
| 342 | case MAC_POLICY_OPEN: |
| 343 | policy_txt = "open"; |
| 344 | break; |
| 345 | case MAC_POLICY_ALLOW: |
| 346 | policy_txt = "allow"; |
| 347 | break; |
| 348 | case MAC_POLICY_DENY: |
| 349 | policy_txt = "deny"; |
| 350 | break; |
| 351 | default: |
| 352 | policy_txt = "unknown"; |
| 353 | break; |
| 354 | } |
| 355 | seq_printf(m, "MAC policy: %s\n", policy_txt); |
| 356 | seq_printf(m, "MAC entries: %u\n", ap->mac_restrictions.entries); |
| 357 | seq_puts(m, "MAC list:\n"); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 358 | return 0; |
| 359 | } |
| 360 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 361 | entry = v; |
| 362 | seq_printf(m, "%pM\n", entry->addr); |
| 363 | return 0; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 364 | } |
| 365 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 366 | static void *ap_control_proc_start(struct seq_file *m, loff_t *_pos) |
| 367 | { |
| 368 | struct ap_data *ap = m->private; |
| 369 | spin_lock_bh(&ap->mac_restrictions.lock); |
| 370 | return seq_list_start_head(&ap->mac_restrictions.mac_list, *_pos); |
| 371 | } |
| 372 | |
| 373 | static void *ap_control_proc_next(struct seq_file *m, void *v, loff_t *_pos) |
| 374 | { |
| 375 | struct ap_data *ap = m->private; |
| 376 | return seq_list_next(v, &ap->mac_restrictions.mac_list, _pos); |
| 377 | } |
| 378 | |
| 379 | static void ap_control_proc_stop(struct seq_file *m, void *v) |
| 380 | { |
| 381 | struct ap_data *ap = m->private; |
| 382 | spin_unlock_bh(&ap->mac_restrictions.lock); |
| 383 | } |
| 384 | |
| 385 | static const struct seq_operations ap_control_proc_seqops = { |
| 386 | .start = ap_control_proc_start, |
| 387 | .next = ap_control_proc_next, |
| 388 | .stop = ap_control_proc_stop, |
| 389 | .show = ap_control_proc_show, |
| 390 | }; |
| 391 | |
| 392 | static int ap_control_proc_open(struct inode *inode, struct file *file) |
| 393 | { |
| 394 | int ret = seq_open(file, &ap_control_proc_seqops); |
| 395 | if (ret == 0) { |
| 396 | struct seq_file *m = file->private_data; |
| 397 | m->private = PDE_DATA(inode); |
| 398 | } |
| 399 | return ret; |
| 400 | } |
| 401 | |
| 402 | static const struct file_operations ap_control_proc_fops = { |
| 403 | .open = ap_control_proc_open, |
| 404 | .read = seq_read, |
| 405 | .llseek = seq_lseek, |
| 406 | .release = seq_release, |
| 407 | }; |
| 408 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 409 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 410 | int ap_control_add_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 411 | { |
| 412 | struct mac_entry *entry; |
| 413 | |
| 414 | entry = kmalloc(sizeof(struct mac_entry), GFP_KERNEL); |
| 415 | if (entry == NULL) |
Kumar Amit Mehta | b53cf45 | 2013-02-18 04:13:44 -0800 | [diff] [blame] | 416 | return -ENOMEM; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 417 | |
| 418 | memcpy(entry->addr, mac, ETH_ALEN); |
| 419 | |
| 420 | spin_lock_bh(&mac_restrictions->lock); |
| 421 | list_add_tail(&entry->list, &mac_restrictions->mac_list); |
| 422 | mac_restrictions->entries++; |
| 423 | spin_unlock_bh(&mac_restrictions->lock); |
| 424 | |
| 425 | return 0; |
| 426 | } |
| 427 | |
| 428 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 429 | int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 430 | { |
| 431 | struct list_head *ptr; |
| 432 | struct mac_entry *entry; |
| 433 | |
| 434 | spin_lock_bh(&mac_restrictions->lock); |
| 435 | for (ptr = mac_restrictions->mac_list.next; |
| 436 | ptr != &mac_restrictions->mac_list; ptr = ptr->next) { |
| 437 | entry = list_entry(ptr, struct mac_entry, list); |
| 438 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 439 | if (ether_addr_equal(entry->addr, mac)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 440 | list_del(ptr); |
| 441 | kfree(entry); |
| 442 | mac_restrictions->entries--; |
| 443 | spin_unlock_bh(&mac_restrictions->lock); |
| 444 | return 0; |
| 445 | } |
| 446 | } |
| 447 | spin_unlock_bh(&mac_restrictions->lock); |
| 448 | return -1; |
| 449 | } |
| 450 | |
| 451 | |
| 452 | static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions, |
| 453 | u8 *mac) |
| 454 | { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 455 | struct mac_entry *entry; |
| 456 | int found = 0; |
| 457 | |
| 458 | if (mac_restrictions->policy == MAC_POLICY_OPEN) |
| 459 | return 0; |
| 460 | |
| 461 | spin_lock_bh(&mac_restrictions->lock); |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 462 | list_for_each_entry(entry, &mac_restrictions->mac_list, list) { |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 463 | if (ether_addr_equal(entry->addr, mac)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 464 | found = 1; |
| 465 | break; |
| 466 | } |
| 467 | } |
| 468 | spin_unlock_bh(&mac_restrictions->lock); |
| 469 | |
| 470 | if (mac_restrictions->policy == MAC_POLICY_ALLOW) |
| 471 | return !found; |
| 472 | else |
| 473 | return found; |
| 474 | } |
| 475 | |
| 476 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 477 | void ap_control_flush_macs(struct mac_restrictions *mac_restrictions) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 478 | { |
| 479 | struct list_head *ptr, *n; |
| 480 | struct mac_entry *entry; |
| 481 | |
| 482 | if (mac_restrictions->entries == 0) |
| 483 | return; |
| 484 | |
| 485 | spin_lock_bh(&mac_restrictions->lock); |
| 486 | for (ptr = mac_restrictions->mac_list.next, n = ptr->next; |
| 487 | ptr != &mac_restrictions->mac_list; |
| 488 | ptr = n, n = ptr->next) { |
| 489 | entry = list_entry(ptr, struct mac_entry, list); |
| 490 | list_del(ptr); |
| 491 | kfree(entry); |
| 492 | } |
| 493 | mac_restrictions->entries = 0; |
| 494 | spin_unlock_bh(&mac_restrictions->lock); |
| 495 | } |
| 496 | |
| 497 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 498 | int ap_control_kick_mac(struct ap_data *ap, struct net_device *dev, u8 *mac) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 499 | { |
| 500 | struct sta_info *sta; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 501 | __le16 resp; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 502 | |
| 503 | spin_lock_bh(&ap->sta_table_lock); |
| 504 | sta = ap_get_sta(ap, mac); |
| 505 | if (sta) { |
| 506 | ap_sta_hash_del(ap, sta); |
| 507 | list_del(&sta->list); |
| 508 | } |
| 509 | spin_unlock_bh(&ap->sta_table_lock); |
| 510 | |
| 511 | if (!sta) |
| 512 | return -EINVAL; |
| 513 | |
| 514 | resp = cpu_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID); |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 515 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 516 | (char *) &resp, 2, sta->addr, 0); |
| 517 | |
| 518 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) |
| 519 | hostap_event_expired_sta(dev, sta); |
| 520 | |
| 521 | ap_free_sta(ap, sta); |
| 522 | |
| 523 | return 0; |
| 524 | } |
| 525 | |
| 526 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 527 | |
| 528 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 529 | void ap_control_kickall(struct ap_data *ap) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 530 | { |
| 531 | struct list_head *ptr, *n; |
| 532 | struct sta_info *sta; |
Jeff Garzik | 74fae82 | 2005-07-31 13:08:32 -0400 | [diff] [blame] | 533 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 534 | spin_lock_bh(&ap->sta_table_lock); |
| 535 | for (ptr = ap->sta_list.next, n = ptr->next; ptr != &ap->sta_list; |
| 536 | ptr = n, n = ptr->next) { |
| 537 | sta = list_entry(ptr, struct sta_info, list); |
| 538 | ap_sta_hash_del(ap, sta); |
| 539 | list_del(&sta->list); |
| 540 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) |
| 541 | hostap_event_expired_sta(sta->local->dev, sta); |
| 542 | ap_free_sta(ap, sta); |
| 543 | } |
| 544 | spin_unlock_bh(&ap->sta_table_lock); |
| 545 | } |
| 546 | |
| 547 | |
| 548 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 549 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 550 | static int prism2_ap_proc_show(struct seq_file *m, void *v) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 551 | { |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 552 | struct sta_info *sta = v; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 553 | int i; |
| 554 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 555 | if (v == SEQ_START_TOKEN) { |
| 556 | seq_printf(m, "# BSSID CHAN SIGNAL NOISE RATE SSID FLAGS\n"); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 557 | return 0; |
| 558 | } |
| 559 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 560 | if (!sta->ap) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 561 | return 0; |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 562 | |
| 563 | seq_printf(m, "%pM %d %d %d %d '", |
| 564 | sta->addr, |
| 565 | sta->u.ap.channel, sta->last_rx_signal, |
| 566 | sta->last_rx_silence, sta->last_rx_rate); |
| 567 | |
| 568 | for (i = 0; i < sta->u.ap.ssid_len; i++) { |
| 569 | if (sta->u.ap.ssid[i] >= 32 && sta->u.ap.ssid[i] < 127) |
| 570 | seq_putc(m, sta->u.ap.ssid[i]); |
| 571 | else |
| 572 | seq_printf(m, "<%02x>", sta->u.ap.ssid[i]); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 573 | } |
| 574 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 575 | seq_putc(m, '\''); |
| 576 | if (sta->capability & WLAN_CAPABILITY_ESS) |
| 577 | seq_puts(m, " [ESS]"); |
| 578 | if (sta->capability & WLAN_CAPABILITY_IBSS) |
| 579 | seq_puts(m, " [IBSS]"); |
| 580 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) |
| 581 | seq_puts(m, " [WEP]"); |
| 582 | seq_putc(m, '\n'); |
| 583 | return 0; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 584 | } |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 585 | |
| 586 | static void *prism2_ap_proc_start(struct seq_file *m, loff_t *_pos) |
| 587 | { |
| 588 | struct ap_data *ap = m->private; |
| 589 | spin_lock_bh(&ap->sta_table_lock); |
| 590 | return seq_list_start_head(&ap->sta_list, *_pos); |
| 591 | } |
| 592 | |
| 593 | static void *prism2_ap_proc_next(struct seq_file *m, void *v, loff_t *_pos) |
| 594 | { |
| 595 | struct ap_data *ap = m->private; |
| 596 | return seq_list_next(v, &ap->sta_list, _pos); |
| 597 | } |
| 598 | |
| 599 | static void prism2_ap_proc_stop(struct seq_file *m, void *v) |
| 600 | { |
| 601 | struct ap_data *ap = m->private; |
| 602 | spin_unlock_bh(&ap->sta_table_lock); |
| 603 | } |
| 604 | |
| 605 | static const struct seq_operations prism2_ap_proc_seqops = { |
| 606 | .start = prism2_ap_proc_start, |
| 607 | .next = prism2_ap_proc_next, |
| 608 | .stop = prism2_ap_proc_stop, |
| 609 | .show = prism2_ap_proc_show, |
| 610 | }; |
| 611 | |
| 612 | static int prism2_ap_proc_open(struct inode *inode, struct file *file) |
| 613 | { |
| 614 | int ret = seq_open(file, &prism2_ap_proc_seqops); |
| 615 | if (ret == 0) { |
| 616 | struct seq_file *m = file->private_data; |
| 617 | m->private = PDE_DATA(inode); |
| 618 | } |
| 619 | return ret; |
| 620 | } |
| 621 | |
| 622 | static const struct file_operations prism2_ap_proc_fops = { |
| 623 | .open = prism2_ap_proc_open, |
| 624 | .read = seq_read, |
| 625 | .llseek = seq_lseek, |
| 626 | .release = seq_release, |
| 627 | }; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 628 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 629 | |
| 630 | |
| 631 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver) |
| 632 | { |
| 633 | if (!ap) |
| 634 | return; |
| 635 | |
| 636 | if (sta_fw_ver == PRISM2_FW_VER(0,8,0)) { |
| 637 | PDEBUG(DEBUG_AP, "Using data::nullfunc ACK workaround - " |
| 638 | "firmware upgrade recommended\n"); |
| 639 | ap->nullfunc_ack = 1; |
| 640 | } else |
| 641 | ap->nullfunc_ack = 0; |
| 642 | |
| 643 | if (sta_fw_ver == PRISM2_FW_VER(1,4,2)) { |
| 644 | printk(KERN_WARNING "%s: Warning: secondary station firmware " |
| 645 | "version 1.4.2 does not seem to work in Host AP mode\n", |
| 646 | ap->local->dev->name); |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | |
| 651 | /* Called only as a tasklet (software IRQ) */ |
| 652 | static void hostap_ap_tx_cb(struct sk_buff *skb, int ok, void *data) |
| 653 | { |
| 654 | struct ap_data *ap = data; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 655 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 656 | |
| 657 | if (!ap->local->hostapd || !ap->local->apdev) { |
| 658 | dev_kfree_skb(skb); |
| 659 | return; |
| 660 | } |
| 661 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 662 | /* Pass the TX callback frame to the hostapd; use 802.11 header version |
| 663 | * 1 to indicate failure (no ACK) and 2 success (frame ACKed) */ |
| 664 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 665 | hdr = (struct ieee80211_hdr *) skb->data; |
| 666 | hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_VERS); |
| 667 | hdr->frame_control |= cpu_to_le16(ok ? BIT(1) : BIT(0)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 668 | |
| 669 | skb->dev = ap->local->apdev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 670 | skb_pull(skb, hostap_80211_get_hdrlen(hdr->frame_control)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 671 | skb->pkt_type = PACKET_OTHERHOST; |
Harvey Harrison | c1b4aa3 | 2009-01-29 13:26:44 -0800 | [diff] [blame] | 672 | skb->protocol = cpu_to_be16(ETH_P_802_2); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 673 | memset(skb->cb, 0, sizeof(skb->cb)); |
| 674 | netif_rx(skb); |
| 675 | } |
| 676 | |
| 677 | |
| 678 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 679 | /* Called only as a tasklet (software IRQ) */ |
| 680 | static void hostap_ap_tx_cb_auth(struct sk_buff *skb, int ok, void *data) |
| 681 | { |
| 682 | struct ap_data *ap = data; |
| 683 | struct net_device *dev = ap->local->dev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 684 | struct ieee80211_hdr *hdr; |
| 685 | u16 auth_alg, auth_transaction, status; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 686 | __le16 *pos; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 687 | struct sta_info *sta = NULL; |
| 688 | char *txt = NULL; |
| 689 | |
| 690 | if (ap->local->hostapd) { |
| 691 | dev_kfree_skb(skb); |
| 692 | return; |
| 693 | } |
| 694 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 695 | hdr = (struct ieee80211_hdr *) skb->data; |
| 696 | if (!ieee80211_is_auth(hdr->frame_control) || |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 697 | skb->len < IEEE80211_MGMT_HDR_LEN + 6) { |
| 698 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_auth received invalid " |
| 699 | "frame\n", dev->name); |
| 700 | dev_kfree_skb(skb); |
| 701 | return; |
| 702 | } |
| 703 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 704 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 705 | auth_alg = le16_to_cpu(*pos++); |
| 706 | auth_transaction = le16_to_cpu(*pos++); |
| 707 | status = le16_to_cpu(*pos++); |
| 708 | |
| 709 | if (!ok) { |
| 710 | txt = "frame was not ACKed"; |
| 711 | goto done; |
| 712 | } |
| 713 | |
| 714 | spin_lock(&ap->sta_table_lock); |
| 715 | sta = ap_get_sta(ap, hdr->addr1); |
| 716 | if (sta) |
| 717 | atomic_inc(&sta->users); |
| 718 | spin_unlock(&ap->sta_table_lock); |
| 719 | |
| 720 | if (!sta) { |
| 721 | txt = "STA not found"; |
| 722 | goto done; |
| 723 | } |
| 724 | |
| 725 | if (status == WLAN_STATUS_SUCCESS && |
| 726 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || |
| 727 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { |
| 728 | txt = "STA authenticated"; |
| 729 | sta->flags |= WLAN_STA_AUTH; |
| 730 | sta->last_auth = jiffies; |
| 731 | } else if (status != WLAN_STATUS_SUCCESS) |
| 732 | txt = "authentication failed"; |
| 733 | |
| 734 | done: |
| 735 | if (sta) |
| 736 | atomic_dec(&sta->users); |
| 737 | if (txt) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 738 | PDEBUG(DEBUG_AP, "%s: %pM auth_cb - alg=%d " |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 739 | "trans#=%d status=%d - %s\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 740 | dev->name, hdr->addr1, |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 741 | auth_alg, auth_transaction, status, txt); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 742 | } |
| 743 | dev_kfree_skb(skb); |
| 744 | } |
| 745 | |
| 746 | |
| 747 | /* Called only as a tasklet (software IRQ) */ |
| 748 | static void hostap_ap_tx_cb_assoc(struct sk_buff *skb, int ok, void *data) |
| 749 | { |
| 750 | struct ap_data *ap = data; |
| 751 | struct net_device *dev = ap->local->dev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 752 | struct ieee80211_hdr *hdr; |
Justin P. Mattock | 1baf8a9 | 2010-06-15 22:33:51 -0700 | [diff] [blame] | 753 | u16 status; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 754 | __le16 *pos; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 755 | struct sta_info *sta = NULL; |
| 756 | char *txt = NULL; |
| 757 | |
| 758 | if (ap->local->hostapd) { |
| 759 | dev_kfree_skb(skb); |
| 760 | return; |
| 761 | } |
| 762 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 763 | hdr = (struct ieee80211_hdr *) skb->data; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 764 | if ((!ieee80211_is_assoc_resp(hdr->frame_control) && |
| 765 | !ieee80211_is_reassoc_resp(hdr->frame_control)) || |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 766 | skb->len < IEEE80211_MGMT_HDR_LEN + 4) { |
| 767 | printk(KERN_DEBUG "%s: hostap_ap_tx_cb_assoc received invalid " |
| 768 | "frame\n", dev->name); |
| 769 | dev_kfree_skb(skb); |
| 770 | return; |
| 771 | } |
| 772 | |
| 773 | if (!ok) { |
| 774 | txt = "frame was not ACKed"; |
| 775 | goto done; |
| 776 | } |
| 777 | |
| 778 | spin_lock(&ap->sta_table_lock); |
| 779 | sta = ap_get_sta(ap, hdr->addr1); |
| 780 | if (sta) |
| 781 | atomic_inc(&sta->users); |
| 782 | spin_unlock(&ap->sta_table_lock); |
| 783 | |
| 784 | if (!sta) { |
| 785 | txt = "STA not found"; |
| 786 | goto done; |
| 787 | } |
| 788 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 789 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 790 | pos++; |
| 791 | status = le16_to_cpu(*pos++); |
| 792 | if (status == WLAN_STATUS_SUCCESS) { |
| 793 | if (!(sta->flags & WLAN_STA_ASSOC)) |
| 794 | hostap_event_new_sta(dev, sta); |
| 795 | txt = "STA associated"; |
| 796 | sta->flags |= WLAN_STA_ASSOC; |
| 797 | sta->last_assoc = jiffies; |
| 798 | } else |
| 799 | txt = "association failed"; |
| 800 | |
| 801 | done: |
| 802 | if (sta) |
| 803 | atomic_dec(&sta->users); |
| 804 | if (txt) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 805 | PDEBUG(DEBUG_AP, "%s: %pM assoc_cb - %s\n", |
| 806 | dev->name, hdr->addr1, txt); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 807 | } |
| 808 | dev_kfree_skb(skb); |
| 809 | } |
| 810 | |
| 811 | /* Called only as a tasklet (software IRQ); TX callback for poll frames used |
| 812 | * in verifying whether the STA is still present. */ |
| 813 | static void hostap_ap_tx_cb_poll(struct sk_buff *skb, int ok, void *data) |
| 814 | { |
| 815 | struct ap_data *ap = data; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 816 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 817 | struct sta_info *sta; |
| 818 | |
| 819 | if (skb->len < 24) |
| 820 | goto fail; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 821 | hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 822 | if (ok) { |
| 823 | spin_lock(&ap->sta_table_lock); |
| 824 | sta = ap_get_sta(ap, hdr->addr1); |
| 825 | if (sta) |
| 826 | sta->flags &= ~WLAN_STA_PENDING_POLL; |
| 827 | spin_unlock(&ap->sta_table_lock); |
| 828 | } else { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 829 | PDEBUG(DEBUG_AP, |
| 830 | "%s: STA %pM did not ACK activity poll frame\n", |
| 831 | ap->local->dev->name, hdr->addr1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 832 | } |
| 833 | |
| 834 | fail: |
| 835 | dev_kfree_skb(skb); |
| 836 | } |
| 837 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 838 | |
| 839 | |
| 840 | void hostap_init_data(local_info_t *local) |
| 841 | { |
| 842 | struct ap_data *ap = local->ap; |
| 843 | |
| 844 | if (ap == NULL) { |
| 845 | printk(KERN_WARNING "hostap_init_data: ap == NULL\n"); |
| 846 | return; |
| 847 | } |
| 848 | memset(ap, 0, sizeof(struct ap_data)); |
| 849 | ap->local = local; |
| 850 | |
| 851 | ap->ap_policy = GET_INT_PARM(other_ap_policy, local->card_idx); |
| 852 | ap->bridge_packets = GET_INT_PARM(ap_bridge_packets, local->card_idx); |
| 853 | ap->max_inactivity = |
| 854 | GET_INT_PARM(ap_max_inactivity, local->card_idx) * HZ; |
| 855 | ap->autom_ap_wds = GET_INT_PARM(autom_ap_wds, local->card_idx); |
| 856 | |
| 857 | spin_lock_init(&ap->sta_table_lock); |
| 858 | INIT_LIST_HEAD(&ap->sta_list); |
| 859 | |
| 860 | /* Initialize task queue structure for AP management */ |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 861 | INIT_WORK(&local->ap->add_sta_proc_queue, handle_add_proc_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 862 | |
| 863 | ap->tx_callback_idx = |
| 864 | hostap_tx_callback_register(local, hostap_ap_tx_cb, ap); |
| 865 | if (ap->tx_callback_idx == 0) |
| 866 | printk(KERN_WARNING "%s: failed to register TX callback for " |
| 867 | "AP\n", local->dev->name); |
| 868 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 869 | INIT_WORK(&local->ap->wds_oper_queue, handle_wds_oper_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 870 | |
| 871 | ap->tx_callback_auth = |
| 872 | hostap_tx_callback_register(local, hostap_ap_tx_cb_auth, ap); |
| 873 | ap->tx_callback_assoc = |
| 874 | hostap_tx_callback_register(local, hostap_ap_tx_cb_assoc, ap); |
| 875 | ap->tx_callback_poll = |
| 876 | hostap_tx_callback_register(local, hostap_ap_tx_cb_poll, ap); |
| 877 | if (ap->tx_callback_auth == 0 || ap->tx_callback_assoc == 0 || |
| 878 | ap->tx_callback_poll == 0) |
| 879 | printk(KERN_WARNING "%s: failed to register TX callback for " |
| 880 | "AP\n", local->dev->name); |
| 881 | |
| 882 | spin_lock_init(&ap->mac_restrictions.lock); |
| 883 | INIT_LIST_HEAD(&ap->mac_restrictions.mac_list); |
| 884 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 885 | |
| 886 | ap->initialized = 1; |
| 887 | } |
| 888 | |
| 889 | |
| 890 | void hostap_init_ap_proc(local_info_t *local) |
| 891 | { |
| 892 | struct ap_data *ap = local->ap; |
| 893 | |
| 894 | ap->proc = local->proc; |
| 895 | if (ap->proc == NULL) |
| 896 | return; |
| 897 | |
| 898 | #ifndef PRISM2_NO_PROCFS_DEBUG |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 899 | proc_create_data("ap_debug", 0, ap->proc, &ap_debug_proc_fops, ap); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 900 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
| 901 | |
| 902 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 903 | proc_create_data("ap_control", 0, ap->proc, &ap_control_proc_fops, ap); |
| 904 | proc_create_data("ap", 0, ap->proc, &prism2_ap_proc_fops, ap); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 905 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 906 | |
| 907 | } |
| 908 | |
| 909 | |
| 910 | void hostap_free_data(struct ap_data *ap) |
| 911 | { |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 912 | struct sta_info *n, *sta; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 913 | |
| 914 | if (ap == NULL || !ap->initialized) { |
| 915 | printk(KERN_DEBUG "hostap_free_data: ap has not yet been " |
| 916 | "initialized - skip resource freeing\n"); |
| 917 | return; |
| 918 | } |
| 919 | |
Tejun Heo | 4382973 | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 920 | flush_work(&ap->add_sta_proc_queue); |
Tejun Heo | 1635953 | 2010-12-12 16:45:15 +0100 | [diff] [blame] | 921 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 922 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
Tejun Heo | 4382973 | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 923 | flush_work(&ap->wds_oper_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 924 | if (ap->crypt) |
| 925 | ap->crypt->deinit(ap->crypt_priv); |
| 926 | ap->crypt = ap->crypt_priv = NULL; |
| 927 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 928 | |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 929 | list_for_each_entry_safe(sta, n, &ap->sta_list, list) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 930 | ap_sta_hash_del(ap, sta); |
| 931 | list_del(&sta->list); |
| 932 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) |
| 933 | hostap_event_expired_sta(sta->local->dev, sta); |
| 934 | ap_free_sta(ap, sta); |
| 935 | } |
| 936 | |
| 937 | #ifndef PRISM2_NO_PROCFS_DEBUG |
| 938 | if (ap->proc != NULL) { |
| 939 | remove_proc_entry("ap_debug", ap->proc); |
| 940 | } |
| 941 | #endif /* PRISM2_NO_PROCFS_DEBUG */ |
| 942 | |
| 943 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 944 | if (ap->proc != NULL) { |
| 945 | remove_proc_entry("ap", ap->proc); |
| 946 | remove_proc_entry("ap_control", ap->proc); |
| 947 | } |
| 948 | ap_control_flush_macs(&ap->mac_restrictions); |
| 949 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 950 | |
| 951 | ap->initialized = 0; |
| 952 | } |
| 953 | |
| 954 | |
| 955 | /* caller should have mutex for AP STA list handling */ |
| 956 | static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta) |
| 957 | { |
| 958 | struct sta_info *s; |
| 959 | |
| 960 | s = ap->sta_hash[STA_HASH(sta)]; |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 961 | while (s != NULL && !ether_addr_equal(s->addr, sta)) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 962 | s = s->hnext; |
| 963 | return s; |
| 964 | } |
| 965 | |
| 966 | |
| 967 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 968 | |
| 969 | /* Called from timer handler and from scheduled AP queue handlers */ |
| 970 | static void prism2_send_mgmt(struct net_device *dev, |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 971 | u16 type_subtype, char *body, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 972 | int body_len, u8 *addr, u16 tx_cb_idx) |
| 973 | { |
| 974 | struct hostap_interface *iface; |
| 975 | local_info_t *local; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 976 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 977 | u16 fc; |
| 978 | struct sk_buff *skb; |
| 979 | struct hostap_skb_tx_data *meta; |
| 980 | int hdrlen; |
| 981 | |
| 982 | iface = netdev_priv(dev); |
| 983 | local = iface->local; |
| 984 | dev = local->dev; /* always use master radio device */ |
| 985 | iface = netdev_priv(dev); |
| 986 | |
| 987 | if (!(dev->flags & IFF_UP)) { |
| 988 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt - device is not UP - " |
| 989 | "cannot send frame\n", dev->name); |
| 990 | return; |
| 991 | } |
| 992 | |
| 993 | skb = dev_alloc_skb(sizeof(*hdr) + body_len); |
| 994 | if (skb == NULL) { |
| 995 | PDEBUG(DEBUG_AP, "%s: prism2_send_mgmt failed to allocate " |
| 996 | "skb\n", dev->name); |
| 997 | return; |
| 998 | } |
| 999 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1000 | fc = type_subtype; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1001 | hdrlen = hostap_80211_get_hdrlen(cpu_to_le16(type_subtype)); |
Johannes Berg | b080db5 | 2017-06-16 14:29:19 +0200 | [diff] [blame] | 1002 | hdr = skb_put_zero(skb, hdrlen); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1003 | if (body) |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 1004 | skb_put_data(skb, body, body_len); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1005 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1006 | /* FIX: ctrl::ack sending used special HFA384X_TX_CTRL_802_11 |
| 1007 | * tx_control instead of using local->tx_control */ |
| 1008 | |
| 1009 | |
| 1010 | memcpy(hdr->addr1, addr, ETH_ALEN); /* DA / RA */ |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1011 | if (ieee80211_is_data(hdr->frame_control)) { |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 1012 | fc |= IEEE80211_FCTL_FROMDS; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1013 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* BSSID */ |
| 1014 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* SA */ |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1015 | } else if (ieee80211_is_ctl(hdr->frame_control)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1016 | /* control:ACK does not have addr2 or addr3 */ |
Joe Perches | 93803b3 | 2015-03-02 19:54:49 -0800 | [diff] [blame] | 1017 | eth_zero_addr(hdr->addr2); |
| 1018 | eth_zero_addr(hdr->addr3); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1019 | } else { |
| 1020 | memcpy(hdr->addr2, dev->dev_addr, ETH_ALEN); /* SA */ |
| 1021 | memcpy(hdr->addr3, dev->dev_addr, ETH_ALEN); /* BSSID */ |
| 1022 | } |
| 1023 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1024 | hdr->frame_control = cpu_to_le16(fc); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1025 | |
| 1026 | meta = (struct hostap_skb_tx_data *) skb->cb; |
| 1027 | memset(meta, 0, sizeof(*meta)); |
| 1028 | meta->magic = HOSTAP_SKB_TX_DATA_MAGIC; |
| 1029 | meta->iface = iface; |
| 1030 | meta->tx_cb_idx = tx_cb_idx; |
| 1031 | |
| 1032 | skb->dev = dev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1033 | skb_reset_mac_header(skb); |
Arnaldo Carvalho de Melo | c1d2bbe | 2007-04-10 20:45:18 -0700 | [diff] [blame] | 1034 | skb_reset_network_header(skb); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1035 | dev_queue_xmit(skb); |
| 1036 | } |
| 1037 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 1038 | |
| 1039 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1040 | static int prism2_sta_proc_show(struct seq_file *m, void *v) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1041 | { |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1042 | struct sta_info *sta = m->private; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1043 | int i; |
| 1044 | |
| 1045 | /* FIX: possible race condition.. the STA data could have just expired, |
| 1046 | * but proc entry was still here so that the read could have started; |
| 1047 | * some locking should be done here.. */ |
| 1048 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1049 | seq_printf(m, |
| 1050 | "%s=%pM\nusers=%d\naid=%d\n" |
| 1051 | "flags=0x%04x%s%s%s%s%s%s%s\n" |
| 1052 | "capability=0x%02x\nlisten_interval=%d\nsupported_rates=", |
| 1053 | sta->ap ? "AP" : "STA", |
| 1054 | sta->addr, atomic_read(&sta->users), sta->aid, |
| 1055 | sta->flags, |
| 1056 | sta->flags & WLAN_STA_AUTH ? " AUTH" : "", |
| 1057 | sta->flags & WLAN_STA_ASSOC ? " ASSOC" : "", |
| 1058 | sta->flags & WLAN_STA_PS ? " PS" : "", |
| 1059 | sta->flags & WLAN_STA_TIM ? " TIM" : "", |
| 1060 | sta->flags & WLAN_STA_PERM ? " PERM" : "", |
| 1061 | sta->flags & WLAN_STA_AUTHORIZED ? " AUTHORIZED" : "", |
| 1062 | sta->flags & WLAN_STA_PENDING_POLL ? " POLL" : "", |
| 1063 | sta->capability, sta->listen_interval); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1064 | /* supported_rates: 500 kbit/s units with msb ignored */ |
| 1065 | for (i = 0; i < sizeof(sta->supported_rates); i++) |
| 1066 | if (sta->supported_rates[i] != 0) |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1067 | seq_printf(m, "%d%sMbps ", |
| 1068 | (sta->supported_rates[i] & 0x7f) / 2, |
| 1069 | sta->supported_rates[i] & 1 ? ".5" : ""); |
| 1070 | seq_printf(m, |
| 1071 | "\njiffies=%lu\nlast_auth=%lu\nlast_assoc=%lu\n" |
| 1072 | "last_rx=%lu\nlast_tx=%lu\nrx_packets=%lu\n" |
| 1073 | "tx_packets=%lu\n" |
| 1074 | "rx_bytes=%lu\ntx_bytes=%lu\nbuffer_count=%d\n" |
| 1075 | "last_rx: silence=%d dBm signal=%d dBm rate=%d%s Mbps\n" |
| 1076 | "tx_rate=%d\ntx[1M]=%d\ntx[2M]=%d\ntx[5.5M]=%d\n" |
| 1077 | "tx[11M]=%d\n" |
| 1078 | "rx[1M]=%d\nrx[2M]=%d\nrx[5.5M]=%d\nrx[11M]=%d\n", |
| 1079 | jiffies, sta->last_auth, sta->last_assoc, sta->last_rx, |
| 1080 | sta->last_tx, |
| 1081 | sta->rx_packets, sta->tx_packets, sta->rx_bytes, |
| 1082 | sta->tx_bytes, skb_queue_len(&sta->tx_buf), |
| 1083 | sta->last_rx_silence, |
| 1084 | sta->last_rx_signal, sta->last_rx_rate / 10, |
| 1085 | sta->last_rx_rate % 10 ? ".5" : "", |
| 1086 | sta->tx_rate, sta->tx_count[0], sta->tx_count[1], |
| 1087 | sta->tx_count[2], sta->tx_count[3], sta->rx_count[0], |
| 1088 | sta->rx_count[1], sta->rx_count[2], sta->rx_count[3]); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1089 | if (sta->crypt && sta->crypt->ops && sta->crypt->ops->print_stats) |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1090 | sta->crypt->ops->print_stats(m, sta->crypt->priv); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1091 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 1092 | if (sta->ap) { |
| 1093 | if (sta->u.ap.channel >= 0) |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1094 | seq_printf(m, "channel=%d\n", sta->u.ap.channel); |
| 1095 | seq_puts(m, "ssid="); |
| 1096 | for (i = 0; i < sta->u.ap.ssid_len; i++) { |
| 1097 | if (sta->u.ap.ssid[i] >= 32 && sta->u.ap.ssid[i] < 127) |
| 1098 | seq_putc(m, sta->u.ap.ssid[i]); |
| 1099 | else |
| 1100 | seq_printf(m, "<%02x>", sta->u.ap.ssid[i]); |
| 1101 | } |
| 1102 | seq_putc(m, '\n'); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1103 | } |
| 1104 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 1105 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1106 | return 0; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1107 | } |
| 1108 | |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1109 | static int prism2_sta_proc_open(struct inode *inode, struct file *file) |
| 1110 | { |
| 1111 | return single_open(file, prism2_sta_proc_show, PDE_DATA(inode)); |
| 1112 | } |
| 1113 | |
| 1114 | static const struct file_operations prism2_sta_proc_fops = { |
| 1115 | .open = prism2_sta_proc_open, |
| 1116 | .read = seq_read, |
| 1117 | .llseek = seq_lseek, |
Al Viro | bc3041f | 2013-05-05 00:13:20 -0400 | [diff] [blame] | 1118 | .release = single_release, |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1119 | }; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1120 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1121 | static void handle_add_proc_queue(struct work_struct *work) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1122 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1123 | struct ap_data *ap = container_of(work, struct ap_data, |
| 1124 | add_sta_proc_queue); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1125 | struct sta_info *sta; |
| 1126 | char name[20]; |
| 1127 | struct add_sta_proc_data *entry, *prev; |
| 1128 | |
| 1129 | entry = ap->add_sta_proc_entries; |
| 1130 | ap->add_sta_proc_entries = NULL; |
| 1131 | |
| 1132 | while (entry) { |
| 1133 | spin_lock_bh(&ap->sta_table_lock); |
| 1134 | sta = ap_get_sta(ap, entry->addr); |
| 1135 | if (sta) |
| 1136 | atomic_inc(&sta->users); |
| 1137 | spin_unlock_bh(&ap->sta_table_lock); |
| 1138 | |
| 1139 | if (sta) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1140 | sprintf(name, "%pM", sta->addr); |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1141 | sta->proc = proc_create_data( |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1142 | name, 0, ap->proc, |
David Howells | 6bbefe8 | 2013-04-10 21:13:23 +0100 | [diff] [blame] | 1143 | &prism2_sta_proc_fops, sta); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1144 | |
| 1145 | atomic_dec(&sta->users); |
| 1146 | } |
| 1147 | |
| 1148 | prev = entry; |
| 1149 | entry = entry->next; |
| 1150 | kfree(prev); |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | static struct sta_info * ap_add_sta(struct ap_data *ap, u8 *addr) |
| 1156 | { |
| 1157 | struct sta_info *sta; |
| 1158 | |
Yan Burman | b0471bb7 | 2006-12-02 13:33:40 +0200 | [diff] [blame] | 1159 | sta = kzalloc(sizeof(struct sta_info), GFP_ATOMIC); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1160 | if (sta == NULL) { |
| 1161 | PDEBUG(DEBUG_AP, "AP: kmalloc failed\n"); |
| 1162 | return NULL; |
| 1163 | } |
| 1164 | |
| 1165 | /* initialize STA info data */ |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1166 | sta->local = ap->local; |
| 1167 | skb_queue_head_init(&sta->tx_buf); |
| 1168 | memcpy(sta->addr, addr, ETH_ALEN); |
| 1169 | |
| 1170 | atomic_inc(&sta->users); |
| 1171 | spin_lock_bh(&ap->sta_table_lock); |
| 1172 | list_add(&sta->list, &ap->sta_list); |
| 1173 | ap->num_sta++; |
| 1174 | ap_sta_hash_add(ap, sta); |
| 1175 | spin_unlock_bh(&ap->sta_table_lock); |
| 1176 | |
| 1177 | if (ap->proc) { |
| 1178 | struct add_sta_proc_data *entry; |
| 1179 | /* schedule a non-interrupt context process to add a procfs |
| 1180 | * entry for the STA since procfs code use GFP_KERNEL */ |
| 1181 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); |
| 1182 | if (entry) { |
| 1183 | memcpy(entry->addr, sta->addr, ETH_ALEN); |
| 1184 | entry->next = ap->add_sta_proc_entries; |
| 1185 | ap->add_sta_proc_entries = entry; |
| 1186 | schedule_work(&ap->add_sta_proc_queue); |
| 1187 | } else |
| 1188 | printk(KERN_DEBUG "Failed to add STA proc data\n"); |
| 1189 | } |
| 1190 | |
| 1191 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
Kees Cook | e99e88a | 2017-10-16 14:43:17 -0700 | [diff] [blame] | 1192 | timer_setup(&sta->timer, ap_handle_timer, 0); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1193 | sta->timer.expires = jiffies + ap->max_inactivity; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1194 | if (!ap->local->hostapd) |
| 1195 | add_timer(&sta->timer); |
| 1196 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 1197 | |
| 1198 | return sta; |
| 1199 | } |
| 1200 | |
| 1201 | |
| 1202 | static int ap_tx_rate_ok(int rateidx, struct sta_info *sta, |
| 1203 | local_info_t *local) |
| 1204 | { |
| 1205 | if (rateidx > sta->tx_max_rate || |
| 1206 | !(sta->tx_supp_rates & (1 << rateidx))) |
| 1207 | return 0; |
| 1208 | |
| 1209 | if (local->tx_rate_control != 0 && |
| 1210 | !(local->tx_rate_control & (1 << rateidx))) |
| 1211 | return 0; |
| 1212 | |
| 1213 | return 1; |
| 1214 | } |
| 1215 | |
| 1216 | |
| 1217 | static void prism2_check_tx_rates(struct sta_info *sta) |
| 1218 | { |
| 1219 | int i; |
| 1220 | |
| 1221 | sta->tx_supp_rates = 0; |
| 1222 | for (i = 0; i < sizeof(sta->supported_rates); i++) { |
| 1223 | if ((sta->supported_rates[i] & 0x7f) == 2) |
| 1224 | sta->tx_supp_rates |= WLAN_RATE_1M; |
| 1225 | if ((sta->supported_rates[i] & 0x7f) == 4) |
| 1226 | sta->tx_supp_rates |= WLAN_RATE_2M; |
| 1227 | if ((sta->supported_rates[i] & 0x7f) == 11) |
| 1228 | sta->tx_supp_rates |= WLAN_RATE_5M5; |
| 1229 | if ((sta->supported_rates[i] & 0x7f) == 22) |
| 1230 | sta->tx_supp_rates |= WLAN_RATE_11M; |
| 1231 | } |
| 1232 | sta->tx_max_rate = sta->tx_rate = sta->tx_rate_idx = 0; |
| 1233 | if (sta->tx_supp_rates & WLAN_RATE_1M) { |
| 1234 | sta->tx_max_rate = 0; |
| 1235 | if (ap_tx_rate_ok(0, sta, sta->local)) { |
| 1236 | sta->tx_rate = 10; |
| 1237 | sta->tx_rate_idx = 0; |
| 1238 | } |
| 1239 | } |
| 1240 | if (sta->tx_supp_rates & WLAN_RATE_2M) { |
| 1241 | sta->tx_max_rate = 1; |
| 1242 | if (ap_tx_rate_ok(1, sta, sta->local)) { |
| 1243 | sta->tx_rate = 20; |
| 1244 | sta->tx_rate_idx = 1; |
| 1245 | } |
| 1246 | } |
| 1247 | if (sta->tx_supp_rates & WLAN_RATE_5M5) { |
| 1248 | sta->tx_max_rate = 2; |
| 1249 | if (ap_tx_rate_ok(2, sta, sta->local)) { |
| 1250 | sta->tx_rate = 55; |
| 1251 | sta->tx_rate_idx = 2; |
| 1252 | } |
| 1253 | } |
| 1254 | if (sta->tx_supp_rates & WLAN_RATE_11M) { |
| 1255 | sta->tx_max_rate = 3; |
| 1256 | if (ap_tx_rate_ok(3, sta, sta->local)) { |
| 1257 | sta->tx_rate = 110; |
| 1258 | sta->tx_rate_idx = 3; |
| 1259 | } |
| 1260 | } |
| 1261 | } |
| 1262 | |
| 1263 | |
| 1264 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 1265 | |
| 1266 | static void ap_crypt_init(struct ap_data *ap) |
| 1267 | { |
John W. Linville | 274bfb8 | 2008-10-29 11:35:05 -0400 | [diff] [blame] | 1268 | ap->crypt = lib80211_get_crypto_ops("WEP"); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1269 | |
| 1270 | if (ap->crypt) { |
| 1271 | if (ap->crypt->init) { |
| 1272 | ap->crypt_priv = ap->crypt->init(0); |
| 1273 | if (ap->crypt_priv == NULL) |
| 1274 | ap->crypt = NULL; |
| 1275 | else { |
| 1276 | u8 key[WEP_KEY_LEN]; |
| 1277 | get_random_bytes(key, WEP_KEY_LEN); |
| 1278 | ap->crypt->set_key(key, WEP_KEY_LEN, NULL, |
| 1279 | ap->crypt_priv); |
| 1280 | } |
| 1281 | } |
| 1282 | } |
| 1283 | |
| 1284 | if (ap->crypt == NULL) { |
| 1285 | printk(KERN_WARNING "AP could not initialize WEP: load module " |
John W. Linville | 274bfb8 | 2008-10-29 11:35:05 -0400 | [diff] [blame] | 1286 | "lib80211_crypt_wep.ko\n"); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1287 | } |
| 1288 | } |
| 1289 | |
| 1290 | |
| 1291 | /* Generate challenge data for shared key authentication. IEEE 802.11 specifies |
Uwe Kleine-König | 25d1fbf | 2010-07-13 11:27:58 +0200 | [diff] [blame] | 1292 | * that WEP algorithm is used for generating challenge. This should be unique, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1293 | * but otherwise there is not really need for randomness etc. Initialize WEP |
| 1294 | * with pseudo random key and then use increasing IV to get unique challenge |
| 1295 | * streams. |
| 1296 | * |
| 1297 | * Called only as a scheduled task for pending AP frames. |
| 1298 | */ |
| 1299 | static char * ap_auth_make_challenge(struct ap_data *ap) |
| 1300 | { |
| 1301 | char *tmpbuf; |
| 1302 | struct sk_buff *skb; |
| 1303 | |
| 1304 | if (ap->crypt == NULL) { |
| 1305 | ap_crypt_init(ap); |
| 1306 | if (ap->crypt == NULL) |
| 1307 | return NULL; |
| 1308 | } |
| 1309 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1310 | tmpbuf = kmalloc(WLAN_AUTH_CHALLENGE_LEN, GFP_ATOMIC); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1311 | if (tmpbuf == NULL) { |
| 1312 | PDEBUG(DEBUG_AP, "AP: kmalloc failed for challenge\n"); |
| 1313 | return NULL; |
| 1314 | } |
| 1315 | |
| 1316 | skb = dev_alloc_skb(WLAN_AUTH_CHALLENGE_LEN + |
James Ketrenos | 5bfc819 | 2005-09-21 12:23:51 -0500 | [diff] [blame] | 1317 | ap->crypt->extra_mpdu_prefix_len + |
| 1318 | ap->crypt->extra_mpdu_postfix_len); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1319 | if (skb == NULL) { |
| 1320 | kfree(tmpbuf); |
| 1321 | return NULL; |
| 1322 | } |
| 1323 | |
James Ketrenos | 5bfc819 | 2005-09-21 12:23:51 -0500 | [diff] [blame] | 1324 | skb_reserve(skb, ap->crypt->extra_mpdu_prefix_len); |
Johannes Berg | b080db5 | 2017-06-16 14:29:19 +0200 | [diff] [blame] | 1325 | skb_put_zero(skb, WLAN_AUTH_CHALLENGE_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1326 | if (ap->crypt->encrypt_mpdu(skb, 0, ap->crypt_priv)) { |
| 1327 | dev_kfree_skb(skb); |
| 1328 | kfree(tmpbuf); |
| 1329 | return NULL; |
| 1330 | } |
| 1331 | |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1332 | skb_copy_from_linear_data_offset(skb, ap->crypt->extra_mpdu_prefix_len, |
| 1333 | tmpbuf, WLAN_AUTH_CHALLENGE_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1334 | dev_kfree_skb(skb); |
| 1335 | |
| 1336 | return tmpbuf; |
| 1337 | } |
| 1338 | |
| 1339 | |
| 1340 | /* Called only as a scheduled task for pending AP frames. */ |
| 1341 | static void handle_authen(local_info_t *local, struct sk_buff *skb, |
| 1342 | struct hostap_80211_rx_status *rx_stats) |
| 1343 | { |
| 1344 | struct net_device *dev = local->dev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1345 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1346 | size_t hdrlen; |
| 1347 | struct ap_data *ap = local->ap; |
| 1348 | char body[8 + WLAN_AUTH_CHALLENGE_LEN], *challenge = NULL; |
| 1349 | int len, olen; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1350 | u16 auth_alg, auth_transaction, status_code; |
| 1351 | __le16 *pos; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1352 | u16 resp = WLAN_STATUS_SUCCESS; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1353 | struct sta_info *sta = NULL; |
John W. Linville | 274bfb8 | 2008-10-29 11:35:05 -0400 | [diff] [blame] | 1354 | struct lib80211_crypt_data *crypt; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1355 | char *txt = ""; |
| 1356 | |
| 1357 | len = skb->len - IEEE80211_MGMT_HDR_LEN; |
| 1358 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1359 | hdrlen = hostap_80211_get_hdrlen(hdr->frame_control); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1360 | |
| 1361 | if (len < 6) { |
| 1362 | PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1363 | "(len=%d) from %pM\n", dev->name, len, hdr->addr2); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1364 | return; |
| 1365 | } |
| 1366 | |
| 1367 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1368 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 1369 | if (sta) |
| 1370 | atomic_inc(&sta->users); |
| 1371 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1372 | |
| 1373 | if (sta && sta->crypt) |
| 1374 | crypt = sta->crypt; |
| 1375 | else { |
| 1376 | int idx = 0; |
| 1377 | if (skb->len >= hdrlen + 3) |
| 1378 | idx = skb->data[hdrlen + 3] >> 6; |
John W. Linville | 274bfb8 | 2008-10-29 11:35:05 -0400 | [diff] [blame] | 1379 | crypt = local->crypt_info.crypt[idx]; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1380 | } |
| 1381 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1382 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1383 | auth_alg = __le16_to_cpu(*pos); |
| 1384 | pos++; |
| 1385 | auth_transaction = __le16_to_cpu(*pos); |
| 1386 | pos++; |
| 1387 | status_code = __le16_to_cpu(*pos); |
| 1388 | pos++; |
| 1389 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 1390 | if (ether_addr_equal(dev->dev_addr, hdr->addr2) || |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1391 | ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) { |
| 1392 | txt = "authentication denied"; |
| 1393 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1394 | goto fail; |
| 1395 | } |
| 1396 | |
| 1397 | if (((local->auth_algs & PRISM2_AUTH_OPEN) && |
| 1398 | auth_alg == WLAN_AUTH_OPEN) || |
| 1399 | ((local->auth_algs & PRISM2_AUTH_SHARED_KEY) && |
| 1400 | crypt && auth_alg == WLAN_AUTH_SHARED_KEY)) { |
| 1401 | } else { |
| 1402 | txt = "unsupported algorithm"; |
| 1403 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; |
| 1404 | goto fail; |
| 1405 | } |
| 1406 | |
| 1407 | if (len >= 8) { |
| 1408 | u8 *u = (u8 *) pos; |
| 1409 | if (*u == WLAN_EID_CHALLENGE) { |
| 1410 | if (*(u + 1) != WLAN_AUTH_CHALLENGE_LEN) { |
| 1411 | txt = "invalid challenge len"; |
| 1412 | resp = WLAN_STATUS_CHALLENGE_FAIL; |
| 1413 | goto fail; |
| 1414 | } |
| 1415 | if (len - 8 < WLAN_AUTH_CHALLENGE_LEN) { |
| 1416 | txt = "challenge underflow"; |
| 1417 | resp = WLAN_STATUS_CHALLENGE_FAIL; |
| 1418 | goto fail; |
| 1419 | } |
| 1420 | challenge = (char *) (u + 2); |
| 1421 | } |
| 1422 | } |
| 1423 | |
| 1424 | if (sta && sta->ap) { |
| 1425 | if (time_after(jiffies, sta->u.ap.last_beacon + |
| 1426 | (10 * sta->listen_interval * HZ) / 1024)) { |
| 1427 | PDEBUG(DEBUG_AP, "%s: no beacons received for a while," |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1428 | " assuming AP %pM is now STA\n", |
| 1429 | dev->name, sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1430 | sta->ap = 0; |
| 1431 | sta->flags = 0; |
| 1432 | sta->u.sta.challenge = NULL; |
| 1433 | } else { |
| 1434 | txt = "AP trying to authenticate?"; |
| 1435 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1436 | goto fail; |
| 1437 | } |
| 1438 | } |
| 1439 | |
| 1440 | if ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) || |
| 1441 | (auth_alg == WLAN_AUTH_SHARED_KEY && |
| 1442 | (auth_transaction == 1 || |
| 1443 | (auth_transaction == 3 && sta != NULL && |
| 1444 | sta->u.sta.challenge != NULL)))) { |
| 1445 | } else { |
| 1446 | txt = "unknown authentication transaction number"; |
| 1447 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; |
| 1448 | goto fail; |
| 1449 | } |
| 1450 | |
| 1451 | if (sta == NULL) { |
| 1452 | txt = "new STA"; |
| 1453 | |
| 1454 | if (local->ap->num_sta >= MAX_STA_COUNT) { |
| 1455 | /* FIX: might try to remove some old STAs first? */ |
| 1456 | txt = "no more room for new STAs"; |
| 1457 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1458 | goto fail; |
| 1459 | } |
| 1460 | |
| 1461 | sta = ap_add_sta(local->ap, hdr->addr2); |
| 1462 | if (sta == NULL) { |
| 1463 | txt = "ap_add_sta failed"; |
| 1464 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1465 | goto fail; |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | switch (auth_alg) { |
| 1470 | case WLAN_AUTH_OPEN: |
| 1471 | txt = "authOK"; |
| 1472 | /* IEEE 802.11 standard is not completely clear about |
| 1473 | * whether STA is considered authenticated after |
| 1474 | * authentication OK frame has been send or after it |
| 1475 | * has been ACKed. In order to reduce interoperability |
| 1476 | * issues, mark the STA authenticated before ACK. */ |
| 1477 | sta->flags |= WLAN_STA_AUTH; |
| 1478 | break; |
| 1479 | |
| 1480 | case WLAN_AUTH_SHARED_KEY: |
| 1481 | if (auth_transaction == 1) { |
| 1482 | if (sta->u.sta.challenge == NULL) { |
| 1483 | sta->u.sta.challenge = |
| 1484 | ap_auth_make_challenge(local->ap); |
| 1485 | if (sta->u.sta.challenge == NULL) { |
| 1486 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1487 | goto fail; |
| 1488 | } |
| 1489 | } |
| 1490 | } else { |
| 1491 | if (sta->u.sta.challenge == NULL || |
| 1492 | challenge == NULL || |
| 1493 | memcmp(sta->u.sta.challenge, challenge, |
| 1494 | WLAN_AUTH_CHALLENGE_LEN) != 0 || |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1495 | !ieee80211_has_protected(hdr->frame_control)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1496 | txt = "challenge response incorrect"; |
| 1497 | resp = WLAN_STATUS_CHALLENGE_FAIL; |
| 1498 | goto fail; |
| 1499 | } |
| 1500 | |
| 1501 | txt = "challenge OK - authOK"; |
| 1502 | /* IEEE 802.11 standard is not completely clear about |
| 1503 | * whether STA is considered authenticated after |
| 1504 | * authentication OK frame has been send or after it |
| 1505 | * has been ACKed. In order to reduce interoperability |
| 1506 | * issues, mark the STA authenticated before ACK. */ |
| 1507 | sta->flags |= WLAN_STA_AUTH; |
| 1508 | kfree(sta->u.sta.challenge); |
| 1509 | sta->u.sta.challenge = NULL; |
| 1510 | } |
| 1511 | break; |
| 1512 | } |
| 1513 | |
| 1514 | fail: |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1515 | pos = (__le16 *) body; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1516 | *pos = cpu_to_le16(auth_alg); |
| 1517 | pos++; |
| 1518 | *pos = cpu_to_le16(auth_transaction + 1); |
| 1519 | pos++; |
| 1520 | *pos = cpu_to_le16(resp); /* status_code */ |
| 1521 | pos++; |
| 1522 | olen = 6; |
| 1523 | |
| 1524 | if (resp == WLAN_STATUS_SUCCESS && sta != NULL && |
| 1525 | sta->u.sta.challenge != NULL && |
| 1526 | auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 1) { |
| 1527 | u8 *tmp = (u8 *) pos; |
| 1528 | *tmp++ = WLAN_EID_CHALLENGE; |
| 1529 | *tmp++ = WLAN_AUTH_CHALLENGE_LEN; |
| 1530 | pos++; |
| 1531 | memcpy(pos, sta->u.sta.challenge, WLAN_AUTH_CHALLENGE_LEN); |
| 1532 | olen += 2 + WLAN_AUTH_CHALLENGE_LEN; |
| 1533 | } |
| 1534 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1535 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1536 | body, olen, hdr->addr2, ap->tx_callback_auth); |
| 1537 | |
| 1538 | if (sta) { |
| 1539 | sta->last_rx = jiffies; |
| 1540 | atomic_dec(&sta->users); |
| 1541 | } |
| 1542 | |
| 1543 | if (resp) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1544 | PDEBUG(DEBUG_AP, "%s: %pM auth (alg=%d " |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1545 | "trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1546 | dev->name, hdr->addr2, |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 1547 | auth_alg, auth_transaction, status_code, len, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1548 | le16_to_cpu(hdr->frame_control), resp, txt); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1549 | } |
| 1550 | } |
| 1551 | |
| 1552 | |
| 1553 | /* Called only as a scheduled task for pending AP frames. */ |
| 1554 | static void handle_assoc(local_info_t *local, struct sk_buff *skb, |
| 1555 | struct hostap_80211_rx_status *rx_stats, int reassoc) |
| 1556 | { |
| 1557 | struct net_device *dev = local->dev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1558 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1559 | char body[12], *p, *lpos; |
| 1560 | int len, left; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1561 | __le16 *pos; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1562 | u16 resp = WLAN_STATUS_SUCCESS; |
| 1563 | struct sta_info *sta = NULL; |
| 1564 | int send_deauth = 0; |
| 1565 | char *txt = ""; |
| 1566 | u8 prev_ap[ETH_ALEN]; |
| 1567 | |
| 1568 | left = len = skb->len - IEEE80211_MGMT_HDR_LEN; |
| 1569 | |
| 1570 | if (len < (reassoc ? 10 : 4)) { |
| 1571 | PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1572 | "(len=%d, reassoc=%d) from %pM\n", |
| 1573 | dev->name, len, reassoc, hdr->addr2); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1574 | return; |
| 1575 | } |
| 1576 | |
| 1577 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1578 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 1579 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { |
| 1580 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1581 | txt = "trying to associate before authentication"; |
| 1582 | send_deauth = 1; |
| 1583 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1584 | sta = NULL; /* do not decrement sta->users */ |
| 1585 | goto fail; |
| 1586 | } |
| 1587 | atomic_inc(&sta->users); |
| 1588 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1589 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1590 | pos = (__le16 *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1591 | sta->capability = __le16_to_cpu(*pos); |
| 1592 | pos++; left -= 2; |
| 1593 | sta->listen_interval = __le16_to_cpu(*pos); |
| 1594 | pos++; left -= 2; |
| 1595 | |
| 1596 | if (reassoc) { |
| 1597 | memcpy(prev_ap, pos, ETH_ALEN); |
| 1598 | pos++; pos++; pos++; left -= 6; |
| 1599 | } else |
Joe Perches | 93803b3 | 2015-03-02 19:54:49 -0800 | [diff] [blame] | 1600 | eth_zero_addr(prev_ap); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1601 | |
| 1602 | if (left >= 2) { |
| 1603 | unsigned int ileft; |
| 1604 | unsigned char *u = (unsigned char *) pos; |
| 1605 | |
| 1606 | if (*u == WLAN_EID_SSID) { |
| 1607 | u++; left--; |
| 1608 | ileft = *u; |
| 1609 | u++; left--; |
| 1610 | |
| 1611 | if (ileft > left || ileft > MAX_SSID_LEN) { |
| 1612 | txt = "SSID overflow"; |
| 1613 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1614 | goto fail; |
| 1615 | } |
| 1616 | |
| 1617 | if (ileft != strlen(local->essid) || |
| 1618 | memcmp(local->essid, u, ileft) != 0) { |
| 1619 | txt = "not our SSID"; |
| 1620 | resp = WLAN_STATUS_ASSOC_DENIED_UNSPEC; |
| 1621 | goto fail; |
| 1622 | } |
| 1623 | |
| 1624 | u += ileft; |
| 1625 | left -= ileft; |
| 1626 | } |
| 1627 | |
| 1628 | if (left >= 2 && *u == WLAN_EID_SUPP_RATES) { |
| 1629 | u++; left--; |
| 1630 | ileft = *u; |
| 1631 | u++; left--; |
Jeff Garzik | 74fae82 | 2005-07-31 13:08:32 -0400 | [diff] [blame] | 1632 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1633 | if (ileft > left || ileft == 0 || |
| 1634 | ileft > WLAN_SUPP_RATES_MAX) { |
| 1635 | txt = "SUPP_RATES len error"; |
| 1636 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1637 | goto fail; |
| 1638 | } |
| 1639 | |
| 1640 | memset(sta->supported_rates, 0, |
| 1641 | sizeof(sta->supported_rates)); |
| 1642 | memcpy(sta->supported_rates, u, ileft); |
| 1643 | prism2_check_tx_rates(sta); |
| 1644 | |
| 1645 | u += ileft; |
| 1646 | left -= ileft; |
| 1647 | } |
| 1648 | |
| 1649 | if (left > 0) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1650 | PDEBUG(DEBUG_AP, "%s: assoc from %pM" |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 1651 | " with extra data (%d bytes) [", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1652 | dev->name, hdr->addr2, left); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1653 | while (left > 0) { |
| 1654 | PDEBUG2(DEBUG_AP, "<%02x>", *u); |
| 1655 | u++; left--; |
| 1656 | } |
| 1657 | PDEBUG2(DEBUG_AP, "]\n"); |
| 1658 | } |
| 1659 | } else { |
| 1660 | txt = "frame underflow"; |
| 1661 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
| 1662 | goto fail; |
| 1663 | } |
| 1664 | |
| 1665 | /* get a unique AID */ |
| 1666 | if (sta->aid > 0) |
| 1667 | txt = "OK, old AID"; |
| 1668 | else { |
| 1669 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1670 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) |
| 1671 | if (local->ap->sta_aid[sta->aid - 1] == NULL) |
| 1672 | break; |
| 1673 | if (sta->aid > MAX_AID_TABLE_SIZE) { |
| 1674 | sta->aid = 0; |
| 1675 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1676 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; |
| 1677 | txt = "no room for more AIDs"; |
| 1678 | } else { |
| 1679 | local->ap->sta_aid[sta->aid - 1] = sta; |
| 1680 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1681 | txt = "OK, new AID"; |
| 1682 | } |
| 1683 | } |
| 1684 | |
| 1685 | fail: |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1686 | pos = (__le16 *) body; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1687 | |
| 1688 | if (send_deauth) { |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1689 | *pos = cpu_to_le16(WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1690 | pos++; |
| 1691 | } else { |
| 1692 | /* FIX: CF-Pollable and CF-PollReq should be set to match the |
| 1693 | * values in beacons/probe responses */ |
| 1694 | /* FIX: how about privacy and WEP? */ |
| 1695 | /* capability */ |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1696 | *pos = cpu_to_le16(WLAN_CAPABILITY_ESS); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1697 | pos++; |
| 1698 | |
| 1699 | /* status_code */ |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1700 | *pos = cpu_to_le16(resp); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1701 | pos++; |
| 1702 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1703 | *pos = cpu_to_le16((sta && sta->aid > 0 ? sta->aid : 0) | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1704 | BIT(14) | BIT(15)); /* AID */ |
| 1705 | pos++; |
| 1706 | |
| 1707 | /* Supported rates (Information element) */ |
| 1708 | p = (char *) pos; |
| 1709 | *p++ = WLAN_EID_SUPP_RATES; |
| 1710 | lpos = p; |
| 1711 | *p++ = 0; /* len */ |
| 1712 | if (local->tx_rate_control & WLAN_RATE_1M) { |
| 1713 | *p++ = local->basic_rates & WLAN_RATE_1M ? 0x82 : 0x02; |
| 1714 | (*lpos)++; |
| 1715 | } |
| 1716 | if (local->tx_rate_control & WLAN_RATE_2M) { |
| 1717 | *p++ = local->basic_rates & WLAN_RATE_2M ? 0x84 : 0x04; |
| 1718 | (*lpos)++; |
| 1719 | } |
| 1720 | if (local->tx_rate_control & WLAN_RATE_5M5) { |
| 1721 | *p++ = local->basic_rates & WLAN_RATE_5M5 ? |
| 1722 | 0x8b : 0x0b; |
| 1723 | (*lpos)++; |
| 1724 | } |
| 1725 | if (local->tx_rate_control & WLAN_RATE_11M) { |
| 1726 | *p++ = local->basic_rates & WLAN_RATE_11M ? |
| 1727 | 0x96 : 0x16; |
| 1728 | (*lpos)++; |
| 1729 | } |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1730 | pos = (__le16 *) p; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1731 | } |
| 1732 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1733 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
| 1734 | (send_deauth ? IEEE80211_STYPE_DEAUTH : |
| 1735 | (reassoc ? IEEE80211_STYPE_REASSOC_RESP : |
| 1736 | IEEE80211_STYPE_ASSOC_RESP)), |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1737 | body, (u8 *) pos - (u8 *) body, |
| 1738 | hdr->addr2, |
| 1739 | send_deauth ? 0 : local->ap->tx_callback_assoc); |
| 1740 | |
| 1741 | if (sta) { |
| 1742 | if (resp == WLAN_STATUS_SUCCESS) { |
| 1743 | sta->last_rx = jiffies; |
| 1744 | /* STA will be marked associated from TX callback, if |
| 1745 | * AssocResp is ACKed */ |
| 1746 | } |
| 1747 | atomic_dec(&sta->users); |
| 1748 | } |
| 1749 | |
| 1750 | #if 0 |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1751 | PDEBUG(DEBUG_AP, "%s: %pM %sassoc (len=%d " |
| 1752 | "prev_ap=%pM) => %d(%d) (%s)\n", |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 1753 | dev->name, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1754 | hdr->addr2, |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 1755 | reassoc ? "re" : "", len, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1756 | prev_ap, |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 1757 | resp, send_deauth, txt); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1758 | #endif |
| 1759 | } |
| 1760 | |
| 1761 | |
| 1762 | /* Called only as a scheduled task for pending AP frames. */ |
| 1763 | static void handle_deauth(local_info_t *local, struct sk_buff *skb, |
| 1764 | struct hostap_80211_rx_status *rx_stats) |
| 1765 | { |
| 1766 | struct net_device *dev = local->dev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1767 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1768 | char *body = (char *) (skb->data + IEEE80211_MGMT_HDR_LEN); |
| 1769 | int len; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1770 | u16 reason_code; |
| 1771 | __le16 *pos; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1772 | struct sta_info *sta = NULL; |
| 1773 | |
| 1774 | len = skb->len - IEEE80211_MGMT_HDR_LEN; |
| 1775 | |
| 1776 | if (len < 2) { |
| 1777 | printk("handle_deauth - too short payload (len=%d)\n", len); |
| 1778 | return; |
| 1779 | } |
| 1780 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1781 | pos = (__le16 *) body; |
| 1782 | reason_code = le16_to_cpu(*pos); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1783 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1784 | PDEBUG(DEBUG_AP, "%s: deauthentication: %pM len=%d, " |
| 1785 | "reason_code=%d\n", dev->name, hdr->addr2, |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 1786 | len, reason_code); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1787 | |
| 1788 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1789 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 1790 | if (sta != NULL) { |
| 1791 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) |
| 1792 | hostap_event_expired_sta(local->dev, sta); |
| 1793 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); |
| 1794 | } |
| 1795 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1796 | if (sta == NULL) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1797 | printk("%s: deauthentication from %pM, " |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1798 | "reason_code=%d, but STA not authenticated\n", dev->name, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1799 | hdr->addr2, reason_code); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1800 | } |
| 1801 | } |
| 1802 | |
| 1803 | |
| 1804 | /* Called only as a scheduled task for pending AP frames. */ |
| 1805 | static void handle_disassoc(local_info_t *local, struct sk_buff *skb, |
| 1806 | struct hostap_80211_rx_status *rx_stats) |
| 1807 | { |
| 1808 | struct net_device *dev = local->dev; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1809 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1810 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
| 1811 | int len; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1812 | u16 reason_code; |
| 1813 | __le16 *pos; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1814 | struct sta_info *sta = NULL; |
| 1815 | |
| 1816 | len = skb->len - IEEE80211_MGMT_HDR_LEN; |
| 1817 | |
| 1818 | if (len < 2) { |
| 1819 | printk("handle_disassoc - too short payload (len=%d)\n", len); |
| 1820 | return; |
| 1821 | } |
| 1822 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1823 | pos = (__le16 *) body; |
| 1824 | reason_code = le16_to_cpu(*pos); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1825 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1826 | PDEBUG(DEBUG_AP, "%s: disassociation: %pM len=%d, " |
| 1827 | "reason_code=%d\n", dev->name, hdr->addr2, |
David S. Miller | 21f644f | 2008-04-08 16:50:44 -0700 | [diff] [blame] | 1828 | len, reason_code); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1829 | |
| 1830 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1831 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 1832 | if (sta != NULL) { |
| 1833 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap) |
| 1834 | hostap_event_expired_sta(local->dev, sta); |
| 1835 | sta->flags &= ~WLAN_STA_ASSOC; |
| 1836 | } |
| 1837 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1838 | if (sta == NULL) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1839 | printk("%s: disassociation from %pM, " |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1840 | "reason_code=%d, but STA not authenticated\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1841 | dev->name, hdr->addr2, reason_code); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1842 | } |
| 1843 | } |
| 1844 | |
| 1845 | |
| 1846 | /* Called only as a scheduled task for pending AP frames. */ |
| 1847 | static void ap_handle_data_nullfunc(local_info_t *local, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1848 | struct ieee80211_hdr *hdr) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1849 | { |
| 1850 | struct net_device *dev = local->dev; |
| 1851 | |
| 1852 | /* some STA f/w's seem to require control::ACK frame for |
| 1853 | * data::nullfunc, but at least Prism2 station f/w version 0.8.0 does |
| 1854 | * not send this.. |
| 1855 | * send control::ACK for the data::nullfunc */ |
| 1856 | |
| 1857 | printk(KERN_DEBUG "Sending control::ACK for data::nullfunc\n"); |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1858 | prism2_send_mgmt(dev, IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1859 | NULL, 0, hdr->addr2, 0); |
| 1860 | } |
| 1861 | |
| 1862 | |
| 1863 | /* Called only as a scheduled task for pending AP frames. */ |
| 1864 | static void ap_handle_dropped_data(local_info_t *local, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1865 | struct ieee80211_hdr *hdr) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1866 | { |
| 1867 | struct net_device *dev = local->dev; |
| 1868 | struct sta_info *sta; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1869 | __le16 reason; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1870 | |
| 1871 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1872 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 1873 | if (sta) |
| 1874 | atomic_inc(&sta->users); |
| 1875 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1876 | |
| 1877 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC)) { |
| 1878 | PDEBUG(DEBUG_AP, "ap_handle_dropped_data: STA is now okay?\n"); |
| 1879 | atomic_dec(&sta->users); |
| 1880 | return; |
| 1881 | } |
| 1882 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1883 | reason = cpu_to_le16(WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1884 | prism2_send_mgmt(dev, IEEE80211_FTYPE_MGMT | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1885 | ((sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) ? |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 1886 | IEEE80211_STYPE_DEAUTH : IEEE80211_STYPE_DISASSOC), |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1887 | (char *) &reason, sizeof(reason), hdr->addr2, 0); |
| 1888 | |
| 1889 | if (sta) |
| 1890 | atomic_dec(&sta->users); |
| 1891 | } |
| 1892 | |
| 1893 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 1894 | |
| 1895 | |
| 1896 | /* Called only as a scheduled task for pending AP frames. */ |
| 1897 | static void pspoll_send_buffered(local_info_t *local, struct sta_info *sta, |
| 1898 | struct sk_buff *skb) |
| 1899 | { |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 1900 | struct hostap_skb_tx_data *meta; |
| 1901 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1902 | if (!(sta->flags & WLAN_STA_PS)) { |
| 1903 | /* Station has moved to non-PS mode, so send all buffered |
| 1904 | * frames using normal device queue. */ |
| 1905 | dev_queue_xmit(skb); |
| 1906 | return; |
| 1907 | } |
| 1908 | |
| 1909 | /* add a flag for hostap_handle_sta_tx() to know that this skb should |
| 1910 | * be passed through even though STA is using PS */ |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 1911 | meta = (struct hostap_skb_tx_data *) skb->cb; |
| 1912 | meta->flags |= HOSTAP_TX_FLAGS_BUFFERED_FRAME; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1913 | if (!skb_queue_empty(&sta->tx_buf)) { |
| 1914 | /* indicate to STA that more frames follow */ |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 1915 | meta->flags |= HOSTAP_TX_FLAGS_ADD_MOREDATA; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1916 | } |
| 1917 | dev_queue_xmit(skb); |
| 1918 | } |
| 1919 | |
| 1920 | |
| 1921 | /* Called only as a scheduled task for pending AP frames. */ |
| 1922 | static void handle_pspoll(local_info_t *local, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1923 | struct ieee80211_hdr *hdr, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1924 | struct hostap_80211_rx_status *rx_stats) |
| 1925 | { |
| 1926 | struct net_device *dev = local->dev; |
| 1927 | struct sta_info *sta; |
| 1928 | u16 aid; |
| 1929 | struct sk_buff *skb; |
| 1930 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1931 | PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n", |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 1932 | hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1933 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 1934 | if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1935 | PDEBUG(DEBUG_AP, |
| 1936 | "handle_pspoll - addr1(BSSID)=%pM not own MAC\n", |
| 1937 | hdr->addr1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1938 | return; |
| 1939 | } |
| 1940 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 1941 | aid = le16_to_cpu(hdr->duration_id); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1942 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) { |
| 1943 | PDEBUG(DEBUG_PS, " PSPOLL and AID[15:14] not set\n"); |
| 1944 | return; |
| 1945 | } |
Pavel Roskin | 1bcca3c | 2008-06-27 16:19:58 -0400 | [diff] [blame] | 1946 | aid &= ~(BIT(15) | BIT(14)); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 1947 | if (aid == 0 || aid > MAX_AID_TABLE_SIZE) { |
| 1948 | PDEBUG(DEBUG_PS, " invalid aid=%d\n", aid); |
| 1949 | return; |
| 1950 | } |
| 1951 | PDEBUG(DEBUG_PS2, " aid=%d\n", aid); |
| 1952 | |
| 1953 | spin_lock_bh(&local->ap->sta_table_lock); |
| 1954 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 1955 | if (sta) |
| 1956 | atomic_inc(&sta->users); |
| 1957 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 1958 | |
| 1959 | if (sta == NULL) { |
| 1960 | PDEBUG(DEBUG_PS, " STA not found\n"); |
| 1961 | return; |
| 1962 | } |
| 1963 | if (sta->aid != aid) { |
| 1964 | PDEBUG(DEBUG_PS, " received aid=%i does not match with " |
| 1965 | "assoc.aid=%d\n", aid, sta->aid); |
| 1966 | return; |
| 1967 | } |
| 1968 | |
| 1969 | /* FIX: todo: |
| 1970 | * - add timeout for buffering (clear aid in TIM vector if buffer timed |
| 1971 | * out (expiry time must be longer than ListenInterval for |
| 1972 | * the corresponding STA; "8802-11: 11.2.1.9 AP aging function" |
| 1973 | * - what to do, if buffered, pspolled, and sent frame is not ACKed by |
| 1974 | * sta; store buffer for later use and leave TIM aid bit set? use |
| 1975 | * TX event to check whether frame was ACKed? |
| 1976 | */ |
| 1977 | |
| 1978 | while ((skb = skb_dequeue(&sta->tx_buf)) != NULL) { |
| 1979 | /* send buffered frame .. */ |
| 1980 | PDEBUG(DEBUG_PS2, "Sending buffered frame to STA after PS POLL" |
| 1981 | " (buffer_count=%d)\n", skb_queue_len(&sta->tx_buf)); |
| 1982 | |
| 1983 | pspoll_send_buffered(local, sta, skb); |
| 1984 | |
| 1985 | if (sta->flags & WLAN_STA_PS) { |
| 1986 | /* send only one buffered packet per PS Poll */ |
| 1987 | /* FIX: should ignore further PS Polls until the |
| 1988 | * buffered packet that was just sent is acknowledged |
| 1989 | * (Tx or TxExc event) */ |
| 1990 | break; |
| 1991 | } |
| 1992 | } |
| 1993 | |
| 1994 | if (skb_queue_empty(&sta->tx_buf)) { |
| 1995 | /* try to clear aid from TIM */ |
| 1996 | if (!(sta->flags & WLAN_STA_TIM)) |
| 1997 | PDEBUG(DEBUG_PS2, "Re-unsetting TIM for aid %d\n", |
| 1998 | aid); |
| 1999 | hostap_set_tim(local, aid, 0); |
| 2000 | sta->flags &= ~WLAN_STA_TIM; |
| 2001 | } |
| 2002 | |
| 2003 | atomic_dec(&sta->users); |
| 2004 | } |
| 2005 | |
| 2006 | |
| 2007 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 2008 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2009 | static void handle_wds_oper_queue(struct work_struct *work) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2010 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 2011 | struct ap_data *ap = container_of(work, struct ap_data, |
| 2012 | wds_oper_queue); |
| 2013 | local_info_t *local = ap->local; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2014 | struct wds_oper_data *entry, *prev; |
| 2015 | |
| 2016 | spin_lock_bh(&local->lock); |
| 2017 | entry = local->ap->wds_oper_entries; |
| 2018 | local->ap->wds_oper_entries = NULL; |
| 2019 | spin_unlock_bh(&local->lock); |
| 2020 | |
| 2021 | while (entry) { |
| 2022 | PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2023 | "to AP %pM\n", |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2024 | local->dev->name, |
| 2025 | entry->type == WDS_ADD ? "adding" : "removing", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2026 | entry->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2027 | if (entry->type == WDS_ADD) |
| 2028 | prism2_wds_add(local, entry->addr, 0); |
| 2029 | else if (entry->type == WDS_DEL) |
| 2030 | prism2_wds_del(local, entry->addr, 0, 1); |
| 2031 | |
| 2032 | prev = entry; |
| 2033 | entry = entry->next; |
| 2034 | kfree(prev); |
| 2035 | } |
| 2036 | } |
| 2037 | |
| 2038 | |
| 2039 | /* Called only as a scheduled task for pending AP frames. */ |
| 2040 | static void handle_beacon(local_info_t *local, struct sk_buff *skb, |
| 2041 | struct hostap_80211_rx_status *rx_stats) |
| 2042 | { |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2043 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2044 | char *body = skb->data + IEEE80211_MGMT_HDR_LEN; |
| 2045 | int len, left; |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 2046 | u16 beacon_int, capability; |
| 2047 | __le16 *pos; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2048 | char *ssid = NULL; |
| 2049 | unsigned char *supp_rates = NULL; |
| 2050 | int ssid_len = 0, supp_rates_len = 0; |
| 2051 | struct sta_info *sta = NULL; |
| 2052 | int new_sta = 0, channel = -1; |
| 2053 | |
| 2054 | len = skb->len - IEEE80211_MGMT_HDR_LEN; |
| 2055 | |
| 2056 | if (len < 8 + 2 + 2) { |
| 2057 | printk(KERN_DEBUG "handle_beacon - too short payload " |
| 2058 | "(len=%d)\n", len); |
| 2059 | return; |
| 2060 | } |
| 2061 | |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 2062 | pos = (__le16 *) body; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2063 | left = len; |
| 2064 | |
| 2065 | /* Timestamp (8 octets) */ |
| 2066 | pos += 4; left -= 8; |
| 2067 | /* Beacon interval (2 octets) */ |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 2068 | beacon_int = le16_to_cpu(*pos); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2069 | pos++; left -= 2; |
| 2070 | /* Capability information (2 octets) */ |
Al Viro | 8a9faf3 | 2007-12-21 03:30:16 -0500 | [diff] [blame] | 2071 | capability = le16_to_cpu(*pos); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2072 | pos++; left -= 2; |
| 2073 | |
| 2074 | if (local->ap->ap_policy != AP_OTHER_AP_EVEN_IBSS && |
| 2075 | capability & WLAN_CAPABILITY_IBSS) |
| 2076 | return; |
| 2077 | |
| 2078 | if (left >= 2) { |
| 2079 | unsigned int ileft; |
| 2080 | unsigned char *u = (unsigned char *) pos; |
| 2081 | |
| 2082 | if (*u == WLAN_EID_SSID) { |
| 2083 | u++; left--; |
| 2084 | ileft = *u; |
| 2085 | u++; left--; |
| 2086 | |
| 2087 | if (ileft > left || ileft > MAX_SSID_LEN) { |
| 2088 | PDEBUG(DEBUG_AP, "SSID: overflow\n"); |
| 2089 | return; |
| 2090 | } |
| 2091 | |
| 2092 | if (local->ap->ap_policy == AP_OTHER_AP_SAME_SSID && |
| 2093 | (ileft != strlen(local->essid) || |
| 2094 | memcmp(local->essid, u, ileft) != 0)) { |
| 2095 | /* not our SSID */ |
| 2096 | return; |
| 2097 | } |
| 2098 | |
| 2099 | ssid = u; |
| 2100 | ssid_len = ileft; |
| 2101 | |
| 2102 | u += ileft; |
| 2103 | left -= ileft; |
| 2104 | } |
| 2105 | |
| 2106 | if (*u == WLAN_EID_SUPP_RATES) { |
| 2107 | u++; left--; |
| 2108 | ileft = *u; |
| 2109 | u++; left--; |
Jeff Garzik | 74fae82 | 2005-07-31 13:08:32 -0400 | [diff] [blame] | 2110 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2111 | if (ileft > left || ileft == 0 || ileft > 8) { |
| 2112 | PDEBUG(DEBUG_AP, " - SUPP_RATES len error\n"); |
| 2113 | return; |
| 2114 | } |
| 2115 | |
| 2116 | supp_rates = u; |
| 2117 | supp_rates_len = ileft; |
| 2118 | |
| 2119 | u += ileft; |
| 2120 | left -= ileft; |
| 2121 | } |
| 2122 | |
| 2123 | if (*u == WLAN_EID_DS_PARAMS) { |
| 2124 | u++; left--; |
| 2125 | ileft = *u; |
| 2126 | u++; left--; |
Jeff Garzik | 74fae82 | 2005-07-31 13:08:32 -0400 | [diff] [blame] | 2127 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2128 | if (ileft > left || ileft != 1) { |
| 2129 | PDEBUG(DEBUG_AP, " - DS_PARAMS len error\n"); |
| 2130 | return; |
| 2131 | } |
| 2132 | |
| 2133 | channel = *u; |
| 2134 | |
| 2135 | u += ileft; |
| 2136 | left -= ileft; |
| 2137 | } |
| 2138 | } |
| 2139 | |
| 2140 | spin_lock_bh(&local->ap->sta_table_lock); |
| 2141 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 2142 | if (sta != NULL) |
| 2143 | atomic_inc(&sta->users); |
| 2144 | spin_unlock_bh(&local->ap->sta_table_lock); |
| 2145 | |
| 2146 | if (sta == NULL) { |
| 2147 | /* add new AP */ |
| 2148 | new_sta = 1; |
| 2149 | sta = ap_add_sta(local->ap, hdr->addr2); |
| 2150 | if (sta == NULL) { |
| 2151 | printk(KERN_INFO "prism2: kmalloc failed for AP " |
| 2152 | "data structure\n"); |
| 2153 | return; |
| 2154 | } |
| 2155 | hostap_event_new_sta(local->dev, sta); |
| 2156 | |
| 2157 | /* mark APs authentication and associated for pseudo ad-hoc |
| 2158 | * style communication */ |
| 2159 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
| 2160 | |
| 2161 | if (local->ap->autom_ap_wds) { |
| 2162 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); |
| 2163 | } |
| 2164 | } |
| 2165 | |
| 2166 | sta->ap = 1; |
| 2167 | if (ssid) { |
| 2168 | sta->u.ap.ssid_len = ssid_len; |
| 2169 | memcpy(sta->u.ap.ssid, ssid, ssid_len); |
| 2170 | sta->u.ap.ssid[ssid_len] = '\0'; |
| 2171 | } else { |
| 2172 | sta->u.ap.ssid_len = 0; |
| 2173 | sta->u.ap.ssid[0] = '\0'; |
| 2174 | } |
| 2175 | sta->u.ap.channel = channel; |
| 2176 | sta->rx_packets++; |
| 2177 | sta->rx_bytes += len; |
| 2178 | sta->u.ap.last_beacon = sta->last_rx = jiffies; |
| 2179 | sta->capability = capability; |
| 2180 | sta->listen_interval = beacon_int; |
| 2181 | |
| 2182 | atomic_dec(&sta->users); |
| 2183 | |
| 2184 | if (new_sta) { |
| 2185 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); |
| 2186 | memcpy(sta->supported_rates, supp_rates, supp_rates_len); |
| 2187 | prism2_check_tx_rates(sta); |
| 2188 | } |
| 2189 | } |
| 2190 | |
| 2191 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 2192 | |
| 2193 | |
| 2194 | /* Called only as a tasklet. */ |
| 2195 | static void handle_ap_item(local_info_t *local, struct sk_buff *skb, |
| 2196 | struct hostap_80211_rx_status *rx_stats) |
| 2197 | { |
| 2198 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 2199 | struct net_device *dev = local->dev; |
| 2200 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 2201 | u16 fc, type, stype; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2202 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2203 | |
| 2204 | /* FIX: should give skb->len to handler functions and check that the |
| 2205 | * buffer is long enough */ |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2206 | hdr = (struct ieee80211_hdr *) skb->data; |
| 2207 | fc = le16_to_cpu(hdr->frame_control); |
| 2208 | type = fc & IEEE80211_FCTL_FTYPE; |
| 2209 | stype = fc & IEEE80211_FCTL_STYPE; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2210 | |
| 2211 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2212 | if (!local->hostapd && type == IEEE80211_FTYPE_DATA) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2213 | PDEBUG(DEBUG_AP, "handle_ap_item - data frame\n"); |
| 2214 | |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 2215 | if (!(fc & IEEE80211_FCTL_TODS) || |
| 2216 | (fc & IEEE80211_FCTL_FROMDS)) { |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2217 | if (stype == IEEE80211_STYPE_NULLFUNC) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2218 | /* no ToDS nullfunc seems to be used to check |
| 2219 | * AP association; so send reject message to |
| 2220 | * speed up re-association */ |
| 2221 | ap_handle_dropped_data(local, hdr); |
| 2222 | goto done; |
| 2223 | } |
| 2224 | PDEBUG(DEBUG_AP, " not ToDS frame (fc=0x%04x)\n", |
| 2225 | fc); |
| 2226 | goto done; |
| 2227 | } |
| 2228 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 2229 | if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2230 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM" |
| 2231 | " not own MAC\n", hdr->addr1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2232 | goto done; |
| 2233 | } |
| 2234 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2235 | if (local->ap->nullfunc_ack && |
| 2236 | stype == IEEE80211_STYPE_NULLFUNC) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2237 | ap_handle_data_nullfunc(local, hdr); |
| 2238 | else |
| 2239 | ap_handle_dropped_data(local, hdr); |
| 2240 | goto done; |
| 2241 | } |
| 2242 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2243 | if (type == IEEE80211_FTYPE_MGMT && stype == IEEE80211_STYPE_BEACON) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2244 | handle_beacon(local, skb, rx_stats); |
| 2245 | goto done; |
| 2246 | } |
| 2247 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 2248 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2249 | if (type == IEEE80211_FTYPE_CTL && stype == IEEE80211_STYPE_PSPOLL) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2250 | handle_pspoll(local, hdr, rx_stats); |
| 2251 | goto done; |
| 2252 | } |
| 2253 | |
| 2254 | if (local->hostapd) { |
| 2255 | PDEBUG(DEBUG_AP, "Unknown frame in AP queue: type=0x%02x " |
| 2256 | "subtype=0x%02x\n", type, stype); |
| 2257 | goto done; |
| 2258 | } |
| 2259 | |
| 2260 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2261 | if (type != IEEE80211_FTYPE_MGMT) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2262 | PDEBUG(DEBUG_AP, "handle_ap_item - not a management frame?\n"); |
| 2263 | goto done; |
| 2264 | } |
| 2265 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 2266 | if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2267 | PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM" |
| 2268 | " not own MAC\n", hdr->addr1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2269 | goto done; |
| 2270 | } |
| 2271 | |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 2272 | if (!ether_addr_equal(hdr->addr3, dev->dev_addr)) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2273 | PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM" |
| 2274 | " not own MAC\n", hdr->addr3); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2275 | goto done; |
| 2276 | } |
| 2277 | |
| 2278 | switch (stype) { |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2279 | case IEEE80211_STYPE_ASSOC_REQ: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2280 | handle_assoc(local, skb, rx_stats, 0); |
| 2281 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2282 | case IEEE80211_STYPE_ASSOC_RESP: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2283 | PDEBUG(DEBUG_AP, "==> ASSOC RESP (ignored)\n"); |
| 2284 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2285 | case IEEE80211_STYPE_REASSOC_REQ: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2286 | handle_assoc(local, skb, rx_stats, 1); |
| 2287 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2288 | case IEEE80211_STYPE_REASSOC_RESP: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2289 | PDEBUG(DEBUG_AP, "==> REASSOC RESP (ignored)\n"); |
| 2290 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2291 | case IEEE80211_STYPE_ATIM: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2292 | PDEBUG(DEBUG_AP, "==> ATIM (ignored)\n"); |
| 2293 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2294 | case IEEE80211_STYPE_DISASSOC: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2295 | handle_disassoc(local, skb, rx_stats); |
| 2296 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2297 | case IEEE80211_STYPE_AUTH: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2298 | handle_authen(local, skb, rx_stats); |
| 2299 | break; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2300 | case IEEE80211_STYPE_DEAUTH: |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2301 | handle_deauth(local, skb, rx_stats); |
| 2302 | break; |
| 2303 | default: |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2304 | PDEBUG(DEBUG_AP, "Unknown mgmt frame subtype 0x%02x\n", |
| 2305 | stype >> 4); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2306 | break; |
| 2307 | } |
| 2308 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 2309 | |
| 2310 | done: |
| 2311 | dev_kfree_skb(skb); |
| 2312 | } |
| 2313 | |
| 2314 | |
| 2315 | /* Called only as a tasklet (software IRQ) */ |
| 2316 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, |
| 2317 | struct hostap_80211_rx_status *rx_stats) |
| 2318 | { |
| 2319 | struct hostap_interface *iface; |
| 2320 | local_info_t *local; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2321 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2322 | |
| 2323 | iface = netdev_priv(dev); |
| 2324 | local = iface->local; |
| 2325 | |
| 2326 | if (skb->len < 16) |
| 2327 | goto drop; |
| 2328 | |
Stephen Hemminger | 4cfa8e4 | 2009-03-20 19:36:42 +0000 | [diff] [blame] | 2329 | dev->stats.rx_packets++; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2330 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2331 | hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2332 | |
| 2333 | if (local->ap->ap_policy == AP_OTHER_AP_SKIP_ALL && |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2334 | ieee80211_is_beacon(hdr->frame_control)) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2335 | goto drop; |
| 2336 | |
Harvey Harrison | c1b4aa3 | 2009-01-29 13:26:44 -0800 | [diff] [blame] | 2337 | skb->protocol = cpu_to_be16(ETH_P_HOSTAP); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2338 | handle_ap_item(local, skb, rx_stats); |
| 2339 | return; |
| 2340 | |
| 2341 | drop: |
| 2342 | dev_kfree_skb(skb); |
| 2343 | } |
| 2344 | |
| 2345 | |
| 2346 | /* Called only as a tasklet (software IRQ) */ |
| 2347 | static void schedule_packet_send(local_info_t *local, struct sta_info *sta) |
| 2348 | { |
| 2349 | struct sk_buff *skb; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2350 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2351 | struct hostap_80211_rx_status rx_stats; |
| 2352 | |
| 2353 | if (skb_queue_empty(&sta->tx_buf)) |
| 2354 | return; |
| 2355 | |
| 2356 | skb = dev_alloc_skb(16); |
| 2357 | if (skb == NULL) { |
| 2358 | printk(KERN_DEBUG "%s: schedule_packet_send: skb alloc " |
| 2359 | "failed\n", local->dev->name); |
| 2360 | return; |
| 2361 | } |
| 2362 | |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 2363 | hdr = skb_put(skb, 16); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2364 | |
| 2365 | /* Generate a fake pspoll frame to start packet delivery */ |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2366 | hdr->frame_control = cpu_to_le16( |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2367 | IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2368 | memcpy(hdr->addr1, local->dev->dev_addr, ETH_ALEN); |
| 2369 | memcpy(hdr->addr2, sta->addr, ETH_ALEN); |
| 2370 | hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14)); |
| 2371 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2372 | PDEBUG(DEBUG_PS2, |
| 2373 | "%s: Scheduling buffered packet delivery for STA %pM\n", |
| 2374 | local->dev->name, sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2375 | |
| 2376 | skb->dev = local->dev; |
| 2377 | |
| 2378 | memset(&rx_stats, 0, sizeof(rx_stats)); |
| 2379 | hostap_rx(local->dev, skb, &rx_stats); |
| 2380 | } |
| 2381 | |
| 2382 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 2383 | int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[], |
| 2384 | struct iw_quality qual[], int buf_size, |
| 2385 | int aplist) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2386 | { |
| 2387 | struct ap_data *ap = local->ap; |
| 2388 | struct list_head *ptr; |
| 2389 | int count = 0; |
| 2390 | |
| 2391 | spin_lock_bh(&ap->sta_table_lock); |
| 2392 | |
| 2393 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; |
| 2394 | ptr = ptr->next) { |
| 2395 | struct sta_info *sta = (struct sta_info *) ptr; |
| 2396 | |
| 2397 | if (aplist && !sta->ap) |
| 2398 | continue; |
| 2399 | addr[count].sa_family = ARPHRD_ETHER; |
| 2400 | memcpy(addr[count].sa_data, sta->addr, ETH_ALEN); |
| 2401 | if (sta->last_rx_silence == 0) |
| 2402 | qual[count].qual = sta->last_rx_signal < 27 ? |
| 2403 | 0 : (sta->last_rx_signal - 27) * 92 / 127; |
| 2404 | else |
| 2405 | qual[count].qual = sta->last_rx_signal - |
| 2406 | sta->last_rx_silence - 35; |
| 2407 | qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); |
| 2408 | qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); |
| 2409 | qual[count].updated = sta->last_rx_updated; |
| 2410 | |
Jean Tourrilhes | c28df16e | 2005-09-23 21:58:59 -0700 | [diff] [blame] | 2411 | sta->last_rx_updated = IW_QUAL_DBM; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2412 | |
| 2413 | count++; |
| 2414 | if (count >= buf_size) |
| 2415 | break; |
| 2416 | } |
| 2417 | spin_unlock_bh(&ap->sta_table_lock); |
| 2418 | |
| 2419 | return count; |
| 2420 | } |
| 2421 | |
| 2422 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2423 | /* Translate our list of Access Points & Stations to a card independent |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2424 | * format that the Wireless Tools will understand - Jean II */ |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2425 | int prism2_ap_translate_scan(struct net_device *dev, |
| 2426 | struct iw_request_info *info, char *buffer) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2427 | { |
| 2428 | struct hostap_interface *iface; |
| 2429 | local_info_t *local; |
| 2430 | struct ap_data *ap; |
| 2431 | struct list_head *ptr; |
| 2432 | struct iw_event iwe; |
| 2433 | char *current_ev = buffer; |
| 2434 | char *end_buf = buffer + IW_SCAN_MAX_DATA; |
| 2435 | #if !defined(PRISM2_NO_KERNEL_IEEE80211_MGMT) |
| 2436 | char buf[64]; |
| 2437 | #endif |
| 2438 | |
| 2439 | iface = netdev_priv(dev); |
| 2440 | local = iface->local; |
| 2441 | ap = local->ap; |
| 2442 | |
| 2443 | spin_lock_bh(&ap->sta_table_lock); |
| 2444 | |
| 2445 | for (ptr = ap->sta_list.next; ptr != NULL && ptr != &ap->sta_list; |
| 2446 | ptr = ptr->next) { |
| 2447 | struct sta_info *sta = (struct sta_info *) ptr; |
| 2448 | |
| 2449 | /* First entry *MUST* be the AP MAC address */ |
| 2450 | memset(&iwe, 0, sizeof(iwe)); |
| 2451 | iwe.cmd = SIOCGIWAP; |
| 2452 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; |
| 2453 | memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN); |
| 2454 | iwe.len = IW_EV_ADDR_LEN; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2455 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
| 2456 | &iwe, IW_EV_ADDR_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2457 | |
| 2458 | /* Use the mode to indicate if it's a station or |
| 2459 | * an Access Point */ |
| 2460 | memset(&iwe, 0, sizeof(iwe)); |
| 2461 | iwe.cmd = SIOCGIWMODE; |
| 2462 | if (sta->ap) |
| 2463 | iwe.u.mode = IW_MODE_MASTER; |
| 2464 | else |
| 2465 | iwe.u.mode = IW_MODE_INFRA; |
| 2466 | iwe.len = IW_EV_UINT_LEN; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2467 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
| 2468 | &iwe, IW_EV_UINT_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2469 | |
| 2470 | /* Some quality */ |
| 2471 | memset(&iwe, 0, sizeof(iwe)); |
| 2472 | iwe.cmd = IWEVQUAL; |
| 2473 | if (sta->last_rx_silence == 0) |
| 2474 | iwe.u.qual.qual = sta->last_rx_signal < 27 ? |
| 2475 | 0 : (sta->last_rx_signal - 27) * 92 / 127; |
| 2476 | else |
| 2477 | iwe.u.qual.qual = sta->last_rx_signal - |
| 2478 | sta->last_rx_silence - 35; |
| 2479 | iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal); |
| 2480 | iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence); |
| 2481 | iwe.u.qual.updated = sta->last_rx_updated; |
| 2482 | iwe.len = IW_EV_QUAL_LEN; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2483 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
| 2484 | &iwe, IW_EV_QUAL_LEN); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2485 | |
| 2486 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 2487 | if (sta->ap) { |
| 2488 | memset(&iwe, 0, sizeof(iwe)); |
| 2489 | iwe.cmd = SIOCGIWESSID; |
| 2490 | iwe.u.data.length = sta->u.ap.ssid_len; |
| 2491 | iwe.u.data.flags = 1; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2492 | current_ev = iwe_stream_add_point(info, current_ev, |
| 2493 | end_buf, &iwe, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2494 | sta->u.ap.ssid); |
| 2495 | |
| 2496 | memset(&iwe, 0, sizeof(iwe)); |
| 2497 | iwe.cmd = SIOCGIWENCODE; |
| 2498 | if (sta->capability & WLAN_CAPABILITY_PRIVACY) |
| 2499 | iwe.u.data.flags = |
| 2500 | IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; |
| 2501 | else |
| 2502 | iwe.u.data.flags = IW_ENCODE_DISABLED; |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2503 | current_ev = iwe_stream_add_point(info, current_ev, |
| 2504 | end_buf, &iwe, |
| 2505 | sta->u.ap.ssid); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2506 | |
| 2507 | if (sta->u.ap.channel > 0 && |
| 2508 | sta->u.ap.channel <= FREQ_COUNT) { |
| 2509 | memset(&iwe, 0, sizeof(iwe)); |
| 2510 | iwe.cmd = SIOCGIWFREQ; |
| 2511 | iwe.u.freq.m = freq_list[sta->u.ap.channel - 1] |
| 2512 | * 100000; |
| 2513 | iwe.u.freq.e = 1; |
| 2514 | current_ev = iwe_stream_add_event( |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2515 | info, current_ev, end_buf, &iwe, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2516 | IW_EV_FREQ_LEN); |
| 2517 | } |
| 2518 | |
| 2519 | memset(&iwe, 0, sizeof(iwe)); |
| 2520 | iwe.cmd = IWEVCUSTOM; |
| 2521 | sprintf(buf, "beacon_interval=%d", |
| 2522 | sta->listen_interval); |
| 2523 | iwe.u.data.length = strlen(buf); |
David S. Miller | ccc5805 | 2008-06-16 18:50:49 -0700 | [diff] [blame] | 2524 | current_ev = iwe_stream_add_point(info, current_ev, |
| 2525 | end_buf, &iwe, buf); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2526 | } |
| 2527 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 2528 | |
Jean Tourrilhes | c28df16e | 2005-09-23 21:58:59 -0700 | [diff] [blame] | 2529 | sta->last_rx_updated = IW_QUAL_DBM; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2530 | |
| 2531 | /* To be continued, we should make good use of IWEVCUSTOM */ |
| 2532 | } |
| 2533 | |
| 2534 | spin_unlock_bh(&ap->sta_table_lock); |
| 2535 | |
| 2536 | return current_ev - buffer; |
| 2537 | } |
| 2538 | |
| 2539 | |
| 2540 | static int prism2_hostapd_add_sta(struct ap_data *ap, |
| 2541 | struct prism2_hostapd_param *param) |
| 2542 | { |
| 2543 | struct sta_info *sta; |
| 2544 | |
| 2545 | spin_lock_bh(&ap->sta_table_lock); |
| 2546 | sta = ap_get_sta(ap, param->sta_addr); |
| 2547 | if (sta) |
| 2548 | atomic_inc(&sta->users); |
| 2549 | spin_unlock_bh(&ap->sta_table_lock); |
| 2550 | |
| 2551 | if (sta == NULL) { |
| 2552 | sta = ap_add_sta(ap, param->sta_addr); |
| 2553 | if (sta == NULL) |
| 2554 | return -1; |
| 2555 | } |
| 2556 | |
| 2557 | if (!(sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) |
| 2558 | hostap_event_new_sta(sta->local->dev, sta); |
| 2559 | |
| 2560 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; |
| 2561 | sta->last_rx = jiffies; |
| 2562 | sta->aid = param->u.add_sta.aid; |
| 2563 | sta->capability = param->u.add_sta.capability; |
| 2564 | sta->tx_supp_rates = param->u.add_sta.tx_supp_rates; |
| 2565 | if (sta->tx_supp_rates & WLAN_RATE_1M) |
| 2566 | sta->supported_rates[0] = 2; |
| 2567 | if (sta->tx_supp_rates & WLAN_RATE_2M) |
| 2568 | sta->supported_rates[1] = 4; |
| 2569 | if (sta->tx_supp_rates & WLAN_RATE_5M5) |
| 2570 | sta->supported_rates[2] = 11; |
| 2571 | if (sta->tx_supp_rates & WLAN_RATE_11M) |
| 2572 | sta->supported_rates[3] = 22; |
| 2573 | prism2_check_tx_rates(sta); |
| 2574 | atomic_dec(&sta->users); |
| 2575 | return 0; |
| 2576 | } |
| 2577 | |
| 2578 | |
| 2579 | static int prism2_hostapd_remove_sta(struct ap_data *ap, |
| 2580 | struct prism2_hostapd_param *param) |
| 2581 | { |
| 2582 | struct sta_info *sta; |
| 2583 | |
| 2584 | spin_lock_bh(&ap->sta_table_lock); |
| 2585 | sta = ap_get_sta(ap, param->sta_addr); |
| 2586 | if (sta) { |
| 2587 | ap_sta_hash_del(ap, sta); |
| 2588 | list_del(&sta->list); |
| 2589 | } |
| 2590 | spin_unlock_bh(&ap->sta_table_lock); |
| 2591 | |
| 2592 | if (!sta) |
| 2593 | return -ENOENT; |
| 2594 | |
| 2595 | if ((sta->flags & WLAN_STA_ASSOC) && !sta->ap && sta->local) |
| 2596 | hostap_event_expired_sta(sta->local->dev, sta); |
| 2597 | ap_free_sta(ap, sta); |
| 2598 | |
| 2599 | return 0; |
| 2600 | } |
| 2601 | |
| 2602 | |
| 2603 | static int prism2_hostapd_get_info_sta(struct ap_data *ap, |
| 2604 | struct prism2_hostapd_param *param) |
| 2605 | { |
| 2606 | struct sta_info *sta; |
| 2607 | |
| 2608 | spin_lock_bh(&ap->sta_table_lock); |
| 2609 | sta = ap_get_sta(ap, param->sta_addr); |
| 2610 | if (sta) |
| 2611 | atomic_inc(&sta->users); |
| 2612 | spin_unlock_bh(&ap->sta_table_lock); |
| 2613 | |
| 2614 | if (!sta) |
| 2615 | return -ENOENT; |
| 2616 | |
| 2617 | param->u.get_info_sta.inactive_sec = (jiffies - sta->last_rx) / HZ; |
| 2618 | |
| 2619 | atomic_dec(&sta->users); |
| 2620 | |
| 2621 | return 1; |
| 2622 | } |
| 2623 | |
| 2624 | |
| 2625 | static int prism2_hostapd_set_flags_sta(struct ap_data *ap, |
| 2626 | struct prism2_hostapd_param *param) |
| 2627 | { |
| 2628 | struct sta_info *sta; |
| 2629 | |
| 2630 | spin_lock_bh(&ap->sta_table_lock); |
| 2631 | sta = ap_get_sta(ap, param->sta_addr); |
| 2632 | if (sta) { |
| 2633 | sta->flags |= param->u.set_flags_sta.flags_or; |
| 2634 | sta->flags &= param->u.set_flags_sta.flags_and; |
| 2635 | } |
| 2636 | spin_unlock_bh(&ap->sta_table_lock); |
| 2637 | |
| 2638 | if (!sta) |
| 2639 | return -ENOENT; |
| 2640 | |
| 2641 | return 0; |
| 2642 | } |
| 2643 | |
| 2644 | |
| 2645 | static int prism2_hostapd_sta_clear_stats(struct ap_data *ap, |
| 2646 | struct prism2_hostapd_param *param) |
| 2647 | { |
| 2648 | struct sta_info *sta; |
| 2649 | int rate; |
| 2650 | |
| 2651 | spin_lock_bh(&ap->sta_table_lock); |
| 2652 | sta = ap_get_sta(ap, param->sta_addr); |
| 2653 | if (sta) { |
| 2654 | sta->rx_packets = sta->tx_packets = 0; |
| 2655 | sta->rx_bytes = sta->tx_bytes = 0; |
| 2656 | for (rate = 0; rate < WLAN_RATE_COUNT; rate++) { |
| 2657 | sta->tx_count[rate] = 0; |
| 2658 | sta->rx_count[rate] = 0; |
| 2659 | } |
| 2660 | } |
| 2661 | spin_unlock_bh(&ap->sta_table_lock); |
| 2662 | |
| 2663 | if (!sta) |
| 2664 | return -ENOENT; |
| 2665 | |
| 2666 | return 0; |
| 2667 | } |
| 2668 | |
| 2669 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 2670 | int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2671 | { |
| 2672 | switch (param->cmd) { |
| 2673 | case PRISM2_HOSTAPD_FLUSH: |
| 2674 | ap_control_kickall(ap); |
| 2675 | return 0; |
| 2676 | case PRISM2_HOSTAPD_ADD_STA: |
| 2677 | return prism2_hostapd_add_sta(ap, param); |
| 2678 | case PRISM2_HOSTAPD_REMOVE_STA: |
| 2679 | return prism2_hostapd_remove_sta(ap, param); |
| 2680 | case PRISM2_HOSTAPD_GET_INFO_STA: |
| 2681 | return prism2_hostapd_get_info_sta(ap, param); |
| 2682 | case PRISM2_HOSTAPD_SET_FLAGS_STA: |
| 2683 | return prism2_hostapd_set_flags_sta(ap, param); |
| 2684 | case PRISM2_HOSTAPD_STA_CLEAR_STATS: |
| 2685 | return prism2_hostapd_sta_clear_stats(ap, param); |
| 2686 | default: |
| 2687 | printk(KERN_WARNING "prism2_hostapd: unknown cmd=%d\n", |
| 2688 | param->cmd); |
| 2689 | return -EOPNOTSUPP; |
| 2690 | } |
| 2691 | } |
| 2692 | |
| 2693 | |
| 2694 | /* Update station info for host-based TX rate control and return current |
| 2695 | * TX rate */ |
| 2696 | static int ap_update_sta_tx_rate(struct sta_info *sta, struct net_device *dev) |
| 2697 | { |
| 2698 | int ret = sta->tx_rate; |
| 2699 | struct hostap_interface *iface; |
| 2700 | local_info_t *local; |
| 2701 | |
| 2702 | iface = netdev_priv(dev); |
| 2703 | local = iface->local; |
| 2704 | |
| 2705 | sta->tx_count[sta->tx_rate_idx]++; |
| 2706 | sta->tx_since_last_failure++; |
| 2707 | sta->tx_consecutive_exc = 0; |
| 2708 | if (sta->tx_since_last_failure >= WLAN_RATE_UPDATE_COUNT && |
| 2709 | sta->tx_rate_idx < sta->tx_max_rate) { |
| 2710 | /* use next higher rate */ |
| 2711 | int old_rate, new_rate; |
| 2712 | old_rate = new_rate = sta->tx_rate_idx; |
| 2713 | while (new_rate < sta->tx_max_rate) { |
| 2714 | new_rate++; |
| 2715 | if (ap_tx_rate_ok(new_rate, sta, local)) { |
| 2716 | sta->tx_rate_idx = new_rate; |
| 2717 | break; |
| 2718 | } |
| 2719 | } |
| 2720 | if (old_rate != sta->tx_rate_idx) { |
| 2721 | switch (sta->tx_rate_idx) { |
| 2722 | case 0: sta->tx_rate = 10; break; |
| 2723 | case 1: sta->tx_rate = 20; break; |
| 2724 | case 2: sta->tx_rate = 55; break; |
| 2725 | case 3: sta->tx_rate = 110; break; |
| 2726 | default: sta->tx_rate = 0; break; |
| 2727 | } |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2728 | PDEBUG(DEBUG_AP, "%s: STA %pM TX rate raised to %d\n", |
| 2729 | dev->name, sta->addr, sta->tx_rate); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2730 | } |
| 2731 | sta->tx_since_last_failure = 0; |
| 2732 | } |
| 2733 | |
| 2734 | return ret; |
| 2735 | } |
| 2736 | |
| 2737 | |
| 2738 | /* Called only from software IRQ. Called for each TX frame prior possible |
| 2739 | * encryption and transmit. */ |
| 2740 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx) |
| 2741 | { |
| 2742 | struct sta_info *sta = NULL; |
| 2743 | struct sk_buff *skb = tx->skb; |
| 2744 | int set_tim, ret; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2745 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2746 | struct hostap_skb_tx_data *meta; |
| 2747 | |
| 2748 | meta = (struct hostap_skb_tx_data *) skb->cb; |
| 2749 | ret = AP_TX_CONTINUE; |
| 2750 | if (local->ap == NULL || skb->len < 10 || |
| 2751 | meta->iface->type == HOSTAP_INTERFACE_STA) |
| 2752 | goto out; |
| 2753 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2754 | hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2755 | |
| 2756 | if (hdr->addr1[0] & 0x01) { |
| 2757 | /* broadcast/multicast frame - no AP related processing */ |
Pavel Roskin | b918099 | 2007-05-28 09:38:47 -0700 | [diff] [blame] | 2758 | if (local->ap->num_sta <= 0) |
| 2759 | ret = AP_TX_DROP; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2760 | goto out; |
| 2761 | } |
| 2762 | |
| 2763 | /* unicast packet - check whether destination STA is associated */ |
| 2764 | spin_lock(&local->ap->sta_table_lock); |
| 2765 | sta = ap_get_sta(local->ap, hdr->addr1); |
| 2766 | if (sta) |
| 2767 | atomic_inc(&sta->users); |
| 2768 | spin_unlock(&local->ap->sta_table_lock); |
| 2769 | |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 2770 | if (local->iw_mode == IW_MODE_MASTER && sta == NULL && |
| 2771 | !(meta->flags & HOSTAP_TX_FLAGS_WDS) && |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2772 | meta->iface->type != HOSTAP_INTERFACE_MASTER && |
| 2773 | meta->iface->type != HOSTAP_INTERFACE_AP) { |
| 2774 | #if 0 |
| 2775 | /* This can happen, e.g., when wlan0 is added to a bridge and |
| 2776 | * bridging code does not know which port is the correct target |
| 2777 | * for a unicast frame. In this case, the packet is send to all |
| 2778 | * ports of the bridge. Since this is a valid scenario, do not |
| 2779 | * print out any errors here. */ |
| 2780 | if (net_ratelimit()) { |
| 2781 | printk(KERN_DEBUG "AP: drop packet to non-associated " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2782 | "STA %pM\n", hdr->addr1); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2783 | } |
| 2784 | #endif |
| 2785 | local->ap->tx_drop_nonassoc++; |
| 2786 | ret = AP_TX_DROP; |
| 2787 | goto out; |
| 2788 | } |
| 2789 | |
| 2790 | if (sta == NULL) |
| 2791 | goto out; |
| 2792 | |
| 2793 | if (!(sta->flags & WLAN_STA_AUTHORIZED)) |
| 2794 | ret = AP_TX_CONTINUE_NOT_AUTHORIZED; |
| 2795 | |
| 2796 | /* Set tx_rate if using host-based TX rate control */ |
| 2797 | if (!local->fw_tx_rate_control) |
| 2798 | local->ap->last_tx_rate = meta->rate = |
| 2799 | ap_update_sta_tx_rate(sta, local->dev); |
| 2800 | |
| 2801 | if (local->iw_mode != IW_MODE_MASTER) |
| 2802 | goto out; |
| 2803 | |
| 2804 | if (!(sta->flags & WLAN_STA_PS)) |
| 2805 | goto out; |
| 2806 | |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 2807 | if (meta->flags & HOSTAP_TX_FLAGS_ADD_MOREDATA) { |
| 2808 | /* indicate to STA that more frames follow */ |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2809 | hdr->frame_control |= |
Harvey Harrison | c1b4aa3 | 2009-01-29 13:26:44 -0800 | [diff] [blame] | 2810 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 2811 | } |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2812 | |
Jouni Malinen | 5bee720 | 2005-08-14 19:08:39 -0700 | [diff] [blame] | 2813 | if (meta->flags & HOSTAP_TX_FLAGS_BUFFERED_FRAME) { |
| 2814 | /* packet was already buffered and now send due to |
| 2815 | * PS poll, so do not rebuffer it */ |
| 2816 | goto out; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2817 | } |
| 2818 | |
| 2819 | if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2820 | PDEBUG(DEBUG_PS, "%s: No more space in STA (%pM)'s" |
| 2821 | "PS mode buffer\n", |
| 2822 | local->dev->name, sta->addr); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2823 | /* Make sure that TIM is set for the station (it might not be |
| 2824 | * after AP wlan hw reset). */ |
| 2825 | /* FIX: should fix hw reset to restore bits based on STA |
| 2826 | * buffer state.. */ |
| 2827 | hostap_set_tim(local, sta->aid, 1); |
| 2828 | sta->flags |= WLAN_STA_TIM; |
| 2829 | ret = AP_TX_DROP; |
| 2830 | goto out; |
| 2831 | } |
| 2832 | |
| 2833 | /* STA in PS mode, buffer frame for later delivery */ |
| 2834 | set_tim = skb_queue_empty(&sta->tx_buf); |
| 2835 | skb_queue_tail(&sta->tx_buf, skb); |
| 2836 | /* FIX: could save RX time to skb and expire buffered frames after |
| 2837 | * some time if STA does not poll for them */ |
| 2838 | |
| 2839 | if (set_tim) { |
| 2840 | if (sta->flags & WLAN_STA_TIM) |
| 2841 | PDEBUG(DEBUG_PS2, "Re-setting TIM for aid %d\n", |
| 2842 | sta->aid); |
| 2843 | hostap_set_tim(local, sta->aid, 1); |
| 2844 | sta->flags |= WLAN_STA_TIM; |
| 2845 | } |
| 2846 | |
| 2847 | ret = AP_TX_BUFFERED; |
| 2848 | |
| 2849 | out: |
| 2850 | if (sta != NULL) { |
| 2851 | if (ret == AP_TX_CONTINUE || |
| 2852 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) { |
| 2853 | sta->tx_packets++; |
| 2854 | sta->tx_bytes += skb->len; |
| 2855 | sta->last_tx = jiffies; |
| 2856 | } |
| 2857 | |
| 2858 | if ((ret == AP_TX_CONTINUE || |
| 2859 | ret == AP_TX_CONTINUE_NOT_AUTHORIZED) && |
| 2860 | sta->crypt && tx->host_encrypt) { |
| 2861 | tx->crypt = sta->crypt; |
| 2862 | tx->sta_ptr = sta; /* hostap_handle_sta_release() will |
| 2863 | * be called to release sta info |
| 2864 | * later */ |
| 2865 | } else |
| 2866 | atomic_dec(&sta->users); |
| 2867 | } |
| 2868 | |
| 2869 | return ret; |
| 2870 | } |
| 2871 | |
| 2872 | |
| 2873 | void hostap_handle_sta_release(void *ptr) |
| 2874 | { |
| 2875 | struct sta_info *sta = ptr; |
| 2876 | atomic_dec(&sta->users); |
| 2877 | } |
| 2878 | |
| 2879 | |
| 2880 | /* Called only as a tasklet (software IRQ) */ |
| 2881 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb) |
| 2882 | { |
| 2883 | struct sta_info *sta; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2884 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2885 | struct hostap_skb_tx_data *meta; |
| 2886 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2887 | hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2888 | meta = (struct hostap_skb_tx_data *) skb->cb; |
| 2889 | |
| 2890 | spin_lock(&local->ap->sta_table_lock); |
| 2891 | sta = ap_get_sta(local->ap, hdr->addr1); |
| 2892 | if (!sta) { |
| 2893 | spin_unlock(&local->ap->sta_table_lock); |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2894 | PDEBUG(DEBUG_AP, "%s: Could not find STA %pM" |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 2895 | " for this TX error (@%lu)\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2896 | local->dev->name, hdr->addr1, jiffies); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2897 | return; |
| 2898 | } |
| 2899 | |
| 2900 | sta->tx_since_last_failure = 0; |
| 2901 | sta->tx_consecutive_exc++; |
Jeff Garzik | 74fae82 | 2005-07-31 13:08:32 -0400 | [diff] [blame] | 2902 | |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2903 | if (sta->tx_consecutive_exc >= WLAN_RATE_DECREASE_THRESHOLD && |
| 2904 | sta->tx_rate_idx > 0 && meta->rate <= sta->tx_rate) { |
| 2905 | /* use next lower rate */ |
| 2906 | int old, rate; |
| 2907 | old = rate = sta->tx_rate_idx; |
| 2908 | while (rate > 0) { |
| 2909 | rate--; |
| 2910 | if (ap_tx_rate_ok(rate, sta, local)) { |
| 2911 | sta->tx_rate_idx = rate; |
| 2912 | break; |
| 2913 | } |
| 2914 | } |
| 2915 | if (old != sta->tx_rate_idx) { |
| 2916 | switch (sta->tx_rate_idx) { |
| 2917 | case 0: sta->tx_rate = 10; break; |
| 2918 | case 1: sta->tx_rate = 20; break; |
| 2919 | case 2: sta->tx_rate = 55; break; |
| 2920 | case 3: sta->tx_rate = 110; break; |
| 2921 | default: sta->tx_rate = 0; break; |
| 2922 | } |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2923 | PDEBUG(DEBUG_AP, |
| 2924 | "%s: STA %pM TX rate lowered to %d\n", |
| 2925 | local->dev->name, sta->addr, sta->tx_rate); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2926 | } |
| 2927 | sta->tx_consecutive_exc = 0; |
| 2928 | } |
| 2929 | spin_unlock(&local->ap->sta_table_lock); |
| 2930 | } |
| 2931 | |
| 2932 | |
| 2933 | static void hostap_update_sta_ps2(local_info_t *local, struct sta_info *sta, |
| 2934 | int pwrmgt, int type, int stype) |
| 2935 | { |
| 2936 | if (pwrmgt && !(sta->flags & WLAN_STA_PS)) { |
| 2937 | sta->flags |= WLAN_STA_PS; |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2938 | PDEBUG(DEBUG_PS2, "STA %pM changed to use PS " |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2939 | "mode (type=0x%02X, stype=0x%02X)\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2940 | sta->addr, type >> 2, stype >> 4); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2941 | } else if (!pwrmgt && (sta->flags & WLAN_STA_PS)) { |
| 2942 | sta->flags &= ~WLAN_STA_PS; |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2943 | PDEBUG(DEBUG_PS2, "STA %pM changed to not use " |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2944 | "PS mode (type=0x%02X, stype=0x%02X)\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 2945 | sta->addr, type >> 2, stype >> 4); |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 2946 | if (type != IEEE80211_FTYPE_CTL || |
| 2947 | stype != IEEE80211_STYPE_PSPOLL) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2948 | schedule_packet_send(local, sta); |
| 2949 | } |
| 2950 | } |
| 2951 | |
| 2952 | |
| 2953 | /* Called only as a tasklet (software IRQ). Called for each RX frame to update |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2954 | * STA power saving state. pwrmgt is a flag from 802.11 frame_control field. */ |
| 2955 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2956 | { |
| 2957 | struct sta_info *sta; |
| 2958 | u16 fc; |
| 2959 | |
| 2960 | spin_lock(&local->ap->sta_table_lock); |
| 2961 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 2962 | if (sta) |
| 2963 | atomic_inc(&sta->users); |
| 2964 | spin_unlock(&local->ap->sta_table_lock); |
| 2965 | |
| 2966 | if (!sta) |
| 2967 | return -1; |
| 2968 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2969 | fc = le16_to_cpu(hdr->frame_control); |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 2970 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2971 | fc & IEEE80211_FCTL_FTYPE, |
| 2972 | fc & IEEE80211_FCTL_STYPE); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2973 | |
| 2974 | atomic_dec(&sta->users); |
| 2975 | return 0; |
| 2976 | } |
| 2977 | |
| 2978 | |
| 2979 | /* Called only as a tasklet (software IRQ). Called for each RX frame after |
| 2980 | * getting RX header and payload from hardware. */ |
| 2981 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, |
| 2982 | struct sk_buff *skb, |
| 2983 | struct hostap_80211_rx_status *rx_stats, |
| 2984 | int wds) |
| 2985 | { |
| 2986 | int ret; |
| 2987 | struct sta_info *sta; |
| 2988 | u16 fc, type, stype; |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2989 | struct ieee80211_hdr *hdr; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2990 | |
| 2991 | if (local->ap == NULL) |
| 2992 | return AP_RX_CONTINUE; |
| 2993 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2994 | hdr = (struct ieee80211_hdr *) skb->data; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2995 | |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 2996 | fc = le16_to_cpu(hdr->frame_control); |
| 2997 | type = fc & IEEE80211_FCTL_FTYPE; |
| 2998 | stype = fc & IEEE80211_FCTL_STYPE; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 2999 | |
| 3000 | spin_lock(&local->ap->sta_table_lock); |
| 3001 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 3002 | if (sta) |
| 3003 | atomic_inc(&sta->users); |
| 3004 | spin_unlock(&local->ap->sta_table_lock); |
| 3005 | |
| 3006 | if (sta && !(sta->flags & WLAN_STA_AUTHORIZED)) |
| 3007 | ret = AP_RX_CONTINUE_NOT_AUTHORIZED; |
| 3008 | else |
| 3009 | ret = AP_RX_CONTINUE; |
| 3010 | |
| 3011 | |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 3012 | if (fc & IEEE80211_FCTL_TODS) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3013 | if (!wds && (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { |
| 3014 | if (local->hostapd) { |
| 3015 | prism2_rx_80211(local->apdev, skb, rx_stats, |
| 3016 | PRISM2_RX_NON_ASSOC); |
| 3017 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 3018 | } else { |
| 3019 | printk(KERN_DEBUG "%s: dropped received packet" |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3020 | " from non-associated STA %pM" |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3021 | " (type=0x%02x, subtype=0x%02x)\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3022 | dev->name, hdr->addr2, |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 3023 | type >> 2, stype >> 4); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3024 | hostap_rx(dev, skb, rx_stats); |
| 3025 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 3026 | } |
| 3027 | ret = AP_RX_EXIT; |
| 3028 | goto out; |
| 3029 | } |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 3030 | } else if (fc & IEEE80211_FCTL_FROMDS) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3031 | if (!wds) { |
| 3032 | /* FromDS frame - not for us; probably |
| 3033 | * broadcast/multicast in another BSS - drop */ |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 3034 | if (ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3035 | printk(KERN_DEBUG "Odd.. FromDS packet " |
| 3036 | "received with own BSSID\n"); |
| 3037 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
| 3038 | } |
| 3039 | ret = AP_RX_DROP; |
| 3040 | goto out; |
| 3041 | } |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 3042 | } else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL && |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 3043 | ether_addr_equal(hdr->addr1, dev->dev_addr)) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3044 | |
| 3045 | if (local->hostapd) { |
| 3046 | prism2_rx_80211(local->apdev, skb, rx_stats, |
| 3047 | PRISM2_RX_NON_ASSOC); |
| 3048 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 3049 | } else { |
| 3050 | /* At least Lucent f/w seems to send data::nullfunc |
| 3051 | * frames with no ToDS flag when the current AP returns |
| 3052 | * after being unavailable for some time. Speed up |
| 3053 | * re-association by informing the station about it not |
| 3054 | * being associated. */ |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3055 | printk(KERN_DEBUG "%s: rejected received nullfunc frame" |
| 3056 | " without ToDS from not associated STA %pM\n", |
| 3057 | dev->name, hdr->addr2); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3058 | hostap_rx(dev, skb, rx_stats); |
| 3059 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 3060 | } |
| 3061 | ret = AP_RX_EXIT; |
| 3062 | goto out; |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 3063 | } else if (stype == IEEE80211_STYPE_NULLFUNC) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3064 | /* At least Lucent cards seem to send periodic nullfunc |
| 3065 | * frames with ToDS. Let these through to update SQ |
| 3066 | * stats and PS state. Nullfunc frames do not contain |
| 3067 | * any data and they will be dropped below. */ |
| 3068 | } else { |
| 3069 | /* If BSSID (Addr3) is foreign, this frame is a normal |
| 3070 | * broadcast frame from an IBSS network. Drop it silently. |
| 3071 | * If BSSID is own, report the dropping of this frame. */ |
dingtianhong | d22fbd7 | 2013-12-26 19:41:15 +0800 | [diff] [blame] | 3072 | if (ether_addr_equal(hdr->addr3, dev->dev_addr)) { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3073 | printk(KERN_DEBUG "%s: dropped received packet from %pM" |
| 3074 | " with no ToDS flag " |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3075 | "(type=0x%02x, subtype=0x%02x)\n", dev->name, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 3076 | hdr->addr2, type >> 2, stype >> 4); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3077 | hostap_dump_rx_80211(dev->name, skb, rx_stats); |
| 3078 | } |
| 3079 | ret = AP_RX_DROP; |
| 3080 | goto out; |
| 3081 | } |
| 3082 | |
| 3083 | if (sta) { |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 3084 | hostap_update_sta_ps2(local, sta, fc & IEEE80211_FCTL_PM, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3085 | type, stype); |
| 3086 | |
| 3087 | sta->rx_packets++; |
| 3088 | sta->rx_bytes += skb->len; |
| 3089 | sta->last_rx = jiffies; |
| 3090 | } |
| 3091 | |
Jouni Malinen | 4339d32 | 2005-08-14 19:08:44 -0700 | [diff] [blame] | 3092 | if (local->ap->nullfunc_ack && stype == IEEE80211_STYPE_NULLFUNC && |
Jouni Malinen | b2f4a2e | 2005-08-14 21:00:01 -0700 | [diff] [blame] | 3093 | fc & IEEE80211_FCTL_TODS) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3094 | if (local->hostapd) { |
| 3095 | prism2_rx_80211(local->apdev, skb, rx_stats, |
| 3096 | PRISM2_RX_NULLFUNC_ACK); |
| 3097 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
| 3098 | } else { |
| 3099 | /* some STA f/w's seem to require control::ACK frame |
| 3100 | * for data::nullfunc, but Prism2 f/w 0.8.0 (at least |
| 3101 | * from Compaq) does not send this.. Try to generate |
| 3102 | * ACK for these frames from the host driver to make |
| 3103 | * power saving work with, e.g., Lucent WaveLAN f/w */ |
| 3104 | hostap_rx(dev, skb, rx_stats); |
| 3105 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |
| 3106 | } |
| 3107 | ret = AP_RX_EXIT; |
| 3108 | goto out; |
| 3109 | } |
| 3110 | |
| 3111 | out: |
| 3112 | if (sta) |
| 3113 | atomic_dec(&sta->users); |
| 3114 | |
| 3115 | return ret; |
| 3116 | } |
| 3117 | |
| 3118 | |
| 3119 | /* Called only as a tasklet (software IRQ) */ |
| 3120 | int hostap_handle_sta_crypto(local_info_t *local, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 3121 | struct ieee80211_hdr *hdr, |
John W. Linville | 274bfb8 | 2008-10-29 11:35:05 -0400 | [diff] [blame] | 3122 | struct lib80211_crypt_data **crypt, |
Jouni Malinen | 62fe7e3 | 2005-07-30 20:43:20 -0700 | [diff] [blame] | 3123 | void **sta_ptr) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3124 | { |
| 3125 | struct sta_info *sta; |
| 3126 | |
| 3127 | spin_lock(&local->ap->sta_table_lock); |
| 3128 | sta = ap_get_sta(local->ap, hdr->addr2); |
| 3129 | if (sta) |
| 3130 | atomic_inc(&sta->users); |
| 3131 | spin_unlock(&local->ap->sta_table_lock); |
| 3132 | |
| 3133 | if (!sta) |
| 3134 | return -1; |
| 3135 | |
| 3136 | if (sta->crypt) { |
| 3137 | *crypt = sta->crypt; |
| 3138 | *sta_ptr = sta; |
| 3139 | /* hostap_handle_sta_release() will be called to release STA |
| 3140 | * info */ |
| 3141 | } else |
| 3142 | atomic_dec(&sta->users); |
| 3143 | |
| 3144 | return 0; |
| 3145 | } |
| 3146 | |
| 3147 | |
| 3148 | /* Called only as a tasklet (software IRQ) */ |
| 3149 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr) |
| 3150 | { |
| 3151 | struct sta_info *sta; |
| 3152 | int ret = 0; |
| 3153 | |
| 3154 | spin_lock(&ap->sta_table_lock); |
| 3155 | sta = ap_get_sta(ap, sta_addr); |
| 3156 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap) |
| 3157 | ret = 1; |
| 3158 | spin_unlock(&ap->sta_table_lock); |
| 3159 | |
| 3160 | return ret; |
| 3161 | } |
| 3162 | |
| 3163 | |
| 3164 | /* Called only as a tasklet (software IRQ) */ |
| 3165 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr) |
| 3166 | { |
| 3167 | struct sta_info *sta; |
| 3168 | int ret = 0; |
| 3169 | |
| 3170 | spin_lock(&ap->sta_table_lock); |
| 3171 | sta = ap_get_sta(ap, sta_addr); |
| 3172 | if (sta != NULL && (sta->flags & WLAN_STA_ASSOC) && !sta->ap && |
| 3173 | ((sta->flags & WLAN_STA_AUTHORIZED) || |
| 3174 | ap->local->ieee_802_1x == 0)) |
| 3175 | ret = 1; |
| 3176 | spin_unlock(&ap->sta_table_lock); |
| 3177 | |
| 3178 | return ret; |
| 3179 | } |
| 3180 | |
| 3181 | |
| 3182 | /* Called only as a tasklet (software IRQ) */ |
| 3183 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr) |
| 3184 | { |
| 3185 | struct sta_info *sta; |
| 3186 | int ret = 1; |
| 3187 | |
| 3188 | if (!ap) |
| 3189 | return -1; |
| 3190 | |
| 3191 | spin_lock(&ap->sta_table_lock); |
| 3192 | sta = ap_get_sta(ap, sta_addr); |
| 3193 | if (sta) |
| 3194 | ret = 0; |
| 3195 | spin_unlock(&ap->sta_table_lock); |
| 3196 | |
| 3197 | if (ret == 1) { |
| 3198 | sta = ap_add_sta(ap, sta_addr); |
| 3199 | if (!sta) |
Adrian Bunk | 54b85f4 | 2006-03-19 19:21:45 -0800 | [diff] [blame] | 3200 | return -1; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3201 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; |
| 3202 | sta->ap = 1; |
| 3203 | memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); |
| 3204 | /* No way of knowing which rates are supported since we did not |
| 3205 | * get supported rates element from beacon/assoc req. Assume |
| 3206 | * that remote end supports all 802.11b rates. */ |
| 3207 | sta->supported_rates[0] = 0x82; |
| 3208 | sta->supported_rates[1] = 0x84; |
| 3209 | sta->supported_rates[2] = 0x0b; |
| 3210 | sta->supported_rates[3] = 0x16; |
| 3211 | sta->tx_supp_rates = WLAN_RATE_1M | WLAN_RATE_2M | |
| 3212 | WLAN_RATE_5M5 | WLAN_RATE_11M; |
| 3213 | sta->tx_rate = 110; |
| 3214 | sta->tx_max_rate = sta->tx_rate_idx = 3; |
| 3215 | } |
| 3216 | |
| 3217 | return ret; |
| 3218 | } |
| 3219 | |
| 3220 | |
| 3221 | /* Called only as a tasklet (software IRQ) */ |
| 3222 | int hostap_update_rx_stats(struct ap_data *ap, |
Dan Williams | 1ea893f | 2009-02-11 17:17:10 -0500 | [diff] [blame] | 3223 | struct ieee80211_hdr *hdr, |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3224 | struct hostap_80211_rx_status *rx_stats) |
| 3225 | { |
| 3226 | struct sta_info *sta; |
| 3227 | |
| 3228 | if (!ap) |
| 3229 | return -1; |
| 3230 | |
| 3231 | spin_lock(&ap->sta_table_lock); |
| 3232 | sta = ap_get_sta(ap, hdr->addr2); |
| 3233 | if (sta) { |
| 3234 | sta->last_rx_silence = rx_stats->noise; |
| 3235 | sta->last_rx_signal = rx_stats->signal; |
| 3236 | sta->last_rx_rate = rx_stats->rate; |
Jean Tourrilhes | c28df16e | 2005-09-23 21:58:59 -0700 | [diff] [blame] | 3237 | sta->last_rx_updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3238 | if (rx_stats->rate == 10) |
| 3239 | sta->rx_count[0]++; |
| 3240 | else if (rx_stats->rate == 20) |
| 3241 | sta->rx_count[1]++; |
| 3242 | else if (rx_stats->rate == 55) |
| 3243 | sta->rx_count[2]++; |
| 3244 | else if (rx_stats->rate == 110) |
| 3245 | sta->rx_count[3]++; |
| 3246 | } |
| 3247 | spin_unlock(&ap->sta_table_lock); |
| 3248 | |
| 3249 | return sta ? 0 : -1; |
| 3250 | } |
| 3251 | |
| 3252 | |
| 3253 | void hostap_update_rates(local_info_t *local) |
| 3254 | { |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 3255 | struct sta_info *sta; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3256 | struct ap_data *ap = local->ap; |
| 3257 | |
| 3258 | if (!ap) |
| 3259 | return; |
| 3260 | |
| 3261 | spin_lock_bh(&ap->sta_table_lock); |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 3262 | list_for_each_entry(sta, &ap->sta_list, list) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3263 | prism2_check_tx_rates(sta); |
| 3264 | } |
| 3265 | spin_unlock_bh(&ap->sta_table_lock); |
| 3266 | } |
| 3267 | |
| 3268 | |
Adrian Bunk | 5fad5a2 | 2006-01-14 03:09:34 +0100 | [diff] [blame] | 3269 | void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent, |
John W. Linville | 274bfb8 | 2008-10-29 11:35:05 -0400 | [diff] [blame] | 3270 | struct lib80211_crypt_data ***crypt) |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3271 | { |
| 3272 | struct sta_info *sta; |
| 3273 | |
| 3274 | spin_lock_bh(&ap->sta_table_lock); |
| 3275 | sta = ap_get_sta(ap, addr); |
| 3276 | if (sta) |
| 3277 | atomic_inc(&sta->users); |
| 3278 | spin_unlock_bh(&ap->sta_table_lock); |
| 3279 | |
| 3280 | if (!sta && permanent) |
| 3281 | sta = ap_add_sta(ap, addr); |
| 3282 | |
| 3283 | if (!sta) |
| 3284 | return NULL; |
| 3285 | |
| 3286 | if (permanent) |
| 3287 | sta->flags |= WLAN_STA_PERM; |
| 3288 | |
| 3289 | *crypt = &sta->crypt; |
| 3290 | |
| 3291 | return sta; |
| 3292 | } |
| 3293 | |
| 3294 | |
| 3295 | void hostap_add_wds_links(local_info_t *local) |
| 3296 | { |
| 3297 | struct ap_data *ap = local->ap; |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 3298 | struct sta_info *sta; |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3299 | |
| 3300 | spin_lock_bh(&ap->sta_table_lock); |
Matthias Kaehlcke | c150573 | 2007-05-28 09:38:48 -0700 | [diff] [blame] | 3301 | list_for_each_entry(sta, &ap->sta_list, list) { |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3302 | if (sta->ap) |
| 3303 | hostap_wds_link_oper(local, sta->addr, WDS_ADD); |
| 3304 | } |
| 3305 | spin_unlock_bh(&ap->sta_table_lock); |
| 3306 | |
| 3307 | schedule_work(&local->ap->wds_oper_queue); |
| 3308 | } |
| 3309 | |
| 3310 | |
| 3311 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type) |
| 3312 | { |
| 3313 | struct wds_oper_data *entry; |
| 3314 | |
| 3315 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); |
| 3316 | if (!entry) |
| 3317 | return; |
| 3318 | memcpy(entry->addr, addr, ETH_ALEN); |
| 3319 | entry->type = type; |
| 3320 | spin_lock_bh(&local->lock); |
| 3321 | entry->next = local->ap->wds_oper_entries; |
| 3322 | local->ap->wds_oper_entries = entry; |
| 3323 | spin_unlock_bh(&local->lock); |
| 3324 | |
| 3325 | schedule_work(&local->ap->wds_oper_queue); |
| 3326 | } |
| 3327 | |
| 3328 | |
| 3329 | EXPORT_SYMBOL(hostap_init_data); |
| 3330 | EXPORT_SYMBOL(hostap_init_ap_proc); |
| 3331 | EXPORT_SYMBOL(hostap_free_data); |
| 3332 | EXPORT_SYMBOL(hostap_check_sta_fw_version); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3333 | EXPORT_SYMBOL(hostap_handle_sta_tx_exc); |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3334 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT |
Jouni Malinen | ff1d276 | 2005-05-12 22:54:16 -0400 | [diff] [blame] | 3335 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ |