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[MAC80211]: kill vlan_id
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / ieee80211.c
CommitLineData
f0706e82
JB		 1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <net/mac80211.h>
12#include <net/ieee80211_radiotap.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/netdevice.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/skbuff.h>
19#include <linux/etherdevice.h>
20#include <linux/if_arp.h>
21#include <linux/wireless.h>
22#include <linux/rtnetlink.h>
f0706e82 23#include <linux/bitmap.h>
881d966b 24#include <net/net_namespace.h>
f0706e82
JB		 25#include <net/cfg80211.h>
26
27#include "ieee80211_common.h"
28#include "ieee80211_i.h"
29#include "ieee80211_rate.h"
30#include "wep.h"
f0706e82
JB		 31#include "wme.h"
32#include "aes_ccm.h"
33#include "ieee80211_led.h"
34#include "ieee80211_cfg.h"
e9f207f0
JB		 35#include "debugfs.h"
36#include "debugfs_netdev.h"
f0706e82 37
b306f453
JB		 38/*
39 * For seeing transmitted packets on monitor interfaces
40 * we have a radiotap header too.
41 */
42struct ieee80211_tx_status_rtap_hdr {
43 struct ieee80211_radiotap_header hdr;
44 __le16 tx_flags;
45 u8 data_retries;
46} __attribute__ ((packed));
47
b2c258fb 48/* common interface routines */
b306f453 49
b2c258fb
JB		 50static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
51{
52 memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
53 return ETH_ALEN;
54}
f0706e82 55
b2c258fb 56/* master interface */
f0706e82 57
b2c258fb
JB		 58static int ieee80211_master_open(struct net_device *dev)
59{
60 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
61 struct ieee80211_sub_if_data *sdata;
62 int res = -EOPNOTSUPP;
f0706e82 63
b2c258fb
JB		 64 read_lock(&local->sub_if_lock);
65 list_for_each_entry(sdata, &local->sub_if_list, list) {
66 if (sdata->dev != dev && netif_running(sdata->dev)) {
67 res = 0;
68 break;
69 }
70 }
71 read_unlock(&local->sub_if_lock);
72 return res;
73}
f0706e82 74
b2c258fb 75static int ieee80211_master_stop(struct net_device *dev)
f0706e82 76{
b2c258fb
JB		 77 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
78 struct ieee80211_sub_if_data *sdata;
f0706e82 79
b2c258fb
JB		 80 read_lock(&local->sub_if_lock);
81 list_for_each_entry(sdata, &local->sub_if_list, list)
82 if (sdata->dev != dev && netif_running(sdata->dev))
83 dev_close(sdata->dev);
84 read_unlock(&local->sub_if_lock);
f0706e82 85
b2c258fb
JB		 86 return 0;
87}
f0706e82 88
b2c258fb 89/* management interface */
f0706e82 90
b2c258fb
JB		 91static void
92ieee80211_fill_frame_info(struct ieee80211_local *local,
93 struct ieee80211_frame_info *fi,
94 struct ieee80211_rx_status *status)
95{
96 if (status) {
97 struct timespec ts;
98 struct ieee80211_rate *rate;
f0706e82 99
b2c258fb
JB		 100 jiffies_to_timespec(jiffies, &ts);
101 fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
102 ts.tv_nsec / 1000);
103 fi->mactime = cpu_to_be64(status->mactime);
104 switch (status->phymode) {
f0706e82 105 case MODE_IEEE80211A:
b2c258fb 106 fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
f0706e82
JB		 107 break;
108 case MODE_IEEE80211B:
b2c258fb 109 fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
f0706e82
JB		 110 break;
111 case MODE_IEEE80211G:
b2c258fb 112 fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
f0706e82 113 break;
b2c258fb
JB		 114 default:
115 fi->phytype = htonl(0xAAAAAAAA);
f0706e82
JB		 116 break;
117 }
b2c258fb
JB		 118 fi->channel = htonl(status->channel);
119 rate = ieee80211_get_rate(local, status->phymode,
120 status->rate);
121 if (rate) {
122 fi->datarate = htonl(rate->rate);
123 if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
124 if (status->rate == rate->val)
125 fi->preamble = htonl(2); /* long */
126 else if (status->rate == rate->val2)
127 fi->preamble = htonl(1); /* short */
128 } else
129 fi->preamble = htonl(0);
130 } else {
131 fi->datarate = htonl(0);
132 fi->preamble = htonl(0);
133 }
134
135 fi->antenna = htonl(status->antenna);
136 fi->priority = htonl(0xffffffff); /* no clue */
137 fi->ssi_type = htonl(ieee80211_ssi_raw);
138 fi->ssi_signal = htonl(status->ssi);
139 fi->ssi_noise = 0x00000000;
140 fi->encoding = 0;
141 } else {
142 /* clear everything because we really don't know.
143 * the msg_type field isn't present on monitor frames
144 * so we don't know whether it will be present or not,
145 * but it's ok to not clear it since it'll be assigned
146 * anyway */
147 memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
148
149 fi->ssi_type = htonl(ieee80211_ssi_none);
150 }
151 fi->version = htonl(IEEE80211_FI_VERSION);
152 fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
153}
154
155/* this routine is actually not just for this, but also
156 * for pushing fake 'management' frames into userspace.
157 * it shall be replaced by a netlink-based system. */
158void
159ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
160 struct ieee80211_rx_status *status, u32 msg_type)
161{
162 struct ieee80211_frame_info *fi;
163 const size_t hlen = sizeof(struct ieee80211_frame_info);
68aae116 164 struct net_device *dev = local->apdev;
b2c258fb 165
68aae116 166 skb->dev = dev;
b2c258fb
JB		 167
168 if (skb_headroom(skb) < hlen) {
169 I802_DEBUG_INC(local->rx_expand_skb_head);
170 if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
171 dev_kfree_skb(skb);
172 return;
173 }
f0706e82 174 }
b2c258fb
JB		 175
176 fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
177
178 ieee80211_fill_frame_info(local, fi, status);
179 fi->msg_type = htonl(msg_type);
180
68aae116
SH		 181 dev->stats.rx_packets++;
182 dev->stats.rx_bytes += skb->len;
b2c258fb
JB		 183
184 skb_set_mac_header(skb, 0);
185 skb->ip_summed = CHECKSUM_UNNECESSARY;
186 skb->pkt_type = PACKET_OTHERHOST;
187 skb->protocol = htons(ETH_P_802_2);
188 memset(skb->cb, 0, sizeof(skb->cb));
189 netif_rx(skb);
f0706e82
JB		 190}
191
b2c258fb 192static int ieee80211_mgmt_open(struct net_device *dev)
f0706e82 193{
b2c258fb 194 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
f0706e82 195
b2c258fb
JB		 196 if (!netif_running(local->mdev))
197 return -EOPNOTSUPP;
198 return 0;
e2ebc74d 199}
f0706e82 200
b2c258fb 201static int ieee80211_mgmt_stop(struct net_device *dev)
e2ebc74d 202{
b2c258fb
JB		 203 return 0;
204}
f0706e82 205
b2c258fb
JB		 206static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
207{
208 /* FIX: what would be proper limits for MTU?
209 * This interface uses 802.11 frames. */
210 if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
211 printk(KERN_WARNING "%s: invalid MTU %d\n",
212 dev->name, new_mtu);
213 return -EINVAL;
f0706e82 214 }
f0706e82 215
b2c258fb
JB		 216#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
217 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
218#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
219 dev->mtu = new_mtu;
220 return 0;
e2ebc74d 221}
f0706e82 222
b2c258fb 223void ieee80211_if_mgmt_setup(struct net_device *dev)
e2ebc74d 224{
b2c258fb
JB		 225 ether_setup(dev);
226 dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
227 dev->change_mtu = ieee80211_change_mtu_apdev;
b2c258fb
JB		 228 dev->open = ieee80211_mgmt_open;
229 dev->stop = ieee80211_mgmt_stop;
230 dev->type = ARPHRD_IEEE80211_PRISM;
231 dev->hard_header_parse = header_parse_80211;
232 dev->uninit = ieee80211_if_reinit;
233 dev->destructor = ieee80211_if_free;
f0706e82
JB		 234}
235
b2c258fb 236/* regular interfaces */
f0706e82 237
b2c258fb 238static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
f0706e82 239{
b2c258fb
JB		 240 /* FIX: what would be proper limits for MTU?
241 * This interface uses 802.3 frames. */
242 if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
243 printk(KERN_WARNING "%s: invalid MTU %d\n",
244 dev->name, new_mtu);
245 return -EINVAL;
246 }
f0706e82 247
b2c258fb
JB		 248#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
249 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
250#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
251 dev->mtu = new_mtu;
f0706e82
JB		 252 return 0;
253}
254
b2c258fb
JB		 255static inline int identical_mac_addr_allowed(int type1, int type2)
256{
257 return (type1 == IEEE80211_IF_TYPE_MNTR ||
258 type2 == IEEE80211_IF_TYPE_MNTR ||
259 (type1 == IEEE80211_IF_TYPE_AP &&
260 type2 == IEEE80211_IF_TYPE_WDS) ||
261 (type1 == IEEE80211_IF_TYPE_WDS &&
262 (type2 == IEEE80211_IF_TYPE_WDS ||
263 type2 == IEEE80211_IF_TYPE_AP)) ||
264 (type1 == IEEE80211_IF_TYPE_AP &&
265 type2 == IEEE80211_IF_TYPE_VLAN) ||
266 (type1 == IEEE80211_IF_TYPE_VLAN &&
267 (type2 == IEEE80211_IF_TYPE_AP ||
268 type2 == IEEE80211_IF_TYPE_VLAN)));
269}
f0706e82 270
b2c258fb
JB		 271/* Check if running monitor interfaces should go to a "soft monitor" mode
272 * and switch them if necessary. */
273static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
f0706e82 274{
b2c258fb 275 struct ieee80211_if_init_conf conf;
f0706e82 276
b2c258fb
JB		 277 if (local->open_count && local->open_count == local->monitors &&
278 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
279 local->ops->remove_interface) {
280 conf.if_id = -1;
281 conf.type = IEEE80211_IF_TYPE_MNTR;
282 conf.mac_addr = NULL;
283 local->ops->remove_interface(local_to_hw(local), &conf);
f0706e82 284 }
f0706e82
JB		 285}
286
b2c258fb
JB		 287/* Check if running monitor interfaces should go to a "hard monitor" mode
288 * and switch them if necessary. */
289static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
f0706e82 290{
b2c258fb 291 struct ieee80211_if_init_conf conf;
f0706e82 292
b2c258fb
JB		 293 if (local->open_count && local->open_count == local->monitors &&
294 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
295 conf.if_id = -1;
296 conf.type = IEEE80211_IF_TYPE_MNTR;
297 conf.mac_addr = NULL;
298 local->ops->add_interface(local_to_hw(local), &conf);
f0706e82 299 }
e2ebc74d 300}
f0706e82 301
8a69aa93
DD		 302static void ieee80211_if_open(struct net_device *dev)
303{
304 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
305
306 switch (sdata->type) {
307 case IEEE80211_IF_TYPE_STA:
308 case IEEE80211_IF_TYPE_IBSS:
d6f2da5b 309 sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
8a69aa93
DD		 310 break;
311 }
312}
313
b2c258fb 314static int ieee80211_open(struct net_device *dev)
e2ebc74d 315{
b2c258fb
JB		 316 struct ieee80211_sub_if_data *sdata, *nsdata;
317 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
318 struct ieee80211_if_init_conf conf;
319 int res;
f0706e82 320
b2c258fb
JB		 321 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
322 read_lock(&local->sub_if_lock);
323 list_for_each_entry(nsdata, &local->sub_if_list, list) {
324 struct net_device *ndev = nsdata->dev;
e2ebc74d 325
b2c258fb
JB		 326 if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
327 compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
328 !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
329 read_unlock(&local->sub_if_lock);
330 return -ENOTUNIQ;
331 }
332 }
333 read_unlock(&local->sub_if_lock);
f0706e82 334
b2c258fb
JB		 335 if (sdata->type == IEEE80211_IF_TYPE_WDS &&
336 is_zero_ether_addr(sdata->u.wds.remote_addr))
337 return -ENOLINK;
f0706e82 338
b2c258fb
JB		 339 if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
340 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
341 /* run the interface in a "soft monitor" mode */
342 local->monitors++;
343 local->open_count++;
344 local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
345 return 0;
346 }
8a69aa93 347 ieee80211_if_open(dev);
b2c258fb 348 ieee80211_start_soft_monitor(local);
f0706e82 349
b2c258fb
JB		 350 conf.if_id = dev->ifindex;
351 conf.type = sdata->type;
1bec3f1a
JB		 352 if (sdata->type == IEEE80211_IF_TYPE_MNTR)
353 conf.mac_addr = NULL;
354 else
355 conf.mac_addr = dev->dev_addr;
b2c258fb
JB		 356 res = local->ops->add_interface(local_to_hw(local), &conf);
357 if (res) {
358 if (sdata->type == IEEE80211_IF_TYPE_MNTR)
359 ieee80211_start_hard_monitor(local);
360 return res;
361 }
f0706e82 362
b2c258fb
JB		 363 if (local->open_count == 0) {
364 res = 0;
365 tasklet_enable(&local->tx_pending_tasklet);
366 tasklet_enable(&local->tasklet);
367 if (local->ops->open)
368 res = local->ops->open(local_to_hw(local));
369 if (res == 0) {
370 res = dev_open(local->mdev);
371 if (res) {
372 if (local->ops->stop)
373 local->ops->stop(local_to_hw(local));
374 } else {
375 res = ieee80211_hw_config(local);
376 if (res && local->ops->stop)
377 local->ops->stop(local_to_hw(local));
378 else if (!res && local->apdev)
379 dev_open(local->apdev);
380 }
381 }
382 if (res) {
383 if (local->ops->remove_interface)
384 local->ops->remove_interface(local_to_hw(local),
385 &conf);
386 return res;
387 }
388 }
389 local->open_count++;
f0706e82 390
b2c258fb
JB		 391 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
392 local->monitors++;
393 local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
d9430a32 394 } else {
b2c258fb 395 ieee80211_if_config(dev);
d9430a32 396 ieee80211_reset_erp_info(dev);
11a843b7 397 ieee80211_enable_keys(sdata);
d9430a32 398 }
f0706e82 399
b2c258fb
JB		 400 if (sdata->type == IEEE80211_IF_TYPE_STA &&
401 !local->user_space_mlme)
402 netif_carrier_off(dev);
403 else
404 netif_carrier_on(dev);
f0706e82 405
b2c258fb
JB		 406 netif_start_queue(dev);
407 return 0;
f0706e82 408}
f0706e82 409
b2c258fb 410static void ieee80211_if_shutdown(struct net_device *dev)
f0706e82 411{
f0706e82 412 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
b2c258fb 413 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
f0706e82 414
b2c258fb
JB		 415 ASSERT_RTNL();
416 switch (sdata->type) {
417 case IEEE80211_IF_TYPE_STA:
418 case IEEE80211_IF_TYPE_IBSS:
419 sdata->u.sta.state = IEEE80211_DISABLED;
420 del_timer_sync(&sdata->u.sta.timer);
2a8a9a88
JB		 421 /*
422 * Holding the sub_if_lock for writing here blocks
423 * out the receive path and makes sure it's not
424 * currently processing a packet that may get
425 * added to the queue.
426 */
427 write_lock_bh(&local->sub_if_lock);
b2c258fb 428 skb_queue_purge(&sdata->u.sta.skb_queue);
2a8a9a88
JB		 429 write_unlock_bh(&local->sub_if_lock);
430
b2c258fb
JB		 431 if (!local->ops->hw_scan &&
432 local->scan_dev == sdata->dev) {
433 local->sta_scanning = 0;
434 cancel_delayed_work(&local->scan_work);
435 }
436 flush_workqueue(local->hw.workqueue);
437 break;
f0706e82 438 }
f0706e82
JB		 439}
440
b2c258fb 441static int ieee80211_stop(struct net_device *dev)
f0706e82 442{
b2c258fb 443 struct ieee80211_sub_if_data *sdata;
f0706e82 444 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
f0706e82 445
b2c258fb 446 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
f0706e82 447
b2c258fb
JB		 448 if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
449 local->open_count > 1 &&
450 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
451 /* remove "soft monitor" interface */
452 local->open_count--;
453 local->monitors--;
454 if (!local->monitors)
455 local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
456 return 0;
f0706e82
JB		 457 }
458
b2c258fb
JB		 459 netif_stop_queue(dev);
460 ieee80211_if_shutdown(dev);
f0706e82 461
b2c258fb
JB		 462 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
463 local->monitors--;
464 if (!local->monitors)
465 local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
11a843b7
JB		 466 } else {
467 /* disable all keys for as long as this netdev is down */
468 ieee80211_disable_keys(sdata);
f0706e82
JB		 469 }
470
b2c258fb
JB		 471 local->open_count--;
472 if (local->open_count == 0) {
473 if (netif_running(local->mdev))
474 dev_close(local->mdev);
475 if (local->apdev)
476 dev_close(local->apdev);
477 if (local->ops->stop)
478 local->ops->stop(local_to_hw(local));
479 tasklet_disable(&local->tx_pending_tasklet);
480 tasklet_disable(&local->tasklet);
481 }
482 if (local->ops->remove_interface) {
483 struct ieee80211_if_init_conf conf;
f0706e82 484
b2c258fb
JB		 485 conf.if_id = dev->ifindex;
486 conf.type = sdata->type;
487 conf.mac_addr = dev->dev_addr;
488 local->ops->remove_interface(local_to_hw(local), &conf);
f0706e82
JB		 489 }
490
b2c258fb
JB		 491 ieee80211_start_hard_monitor(local);
492
f0706e82
JB		 493 return 0;
494}
495
496enum netif_tx_lock_class {
497 TX_LOCK_NORMAL,
498 TX_LOCK_MASTER,
499};
500
501static inline void netif_tx_lock_nested(struct net_device *dev, int subclass)
502{
503 spin_lock_nested(&dev->_xmit_lock, subclass);
504 dev->xmit_lock_owner = smp_processor_id();
505}
506
507static void ieee80211_set_multicast_list(struct net_device *dev)
508{
509 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
510 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
511 unsigned short flags;
512
513 netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER);
13262ffd
JS		 514 if (((dev->flags & IFF_ALLMULTI) != 0) ^
515 ((sdata->flags & IEEE80211_SDATA_ALLMULTI) != 0)) {
516 if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
f0706e82 517 local->iff_allmultis--;
13262ffd 518 else
f0706e82 519 local->iff_allmultis++;
13262ffd 520 sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
f0706e82 521 }
13262ffd
JS		 522 if (((dev->flags & IFF_PROMISC) != 0) ^
523 ((sdata->flags & IEEE80211_SDATA_PROMISC) != 0)) {
524 if (sdata->flags & IEEE80211_SDATA_PROMISC)
f0706e82 525 local->iff_promiscs--;
13262ffd 526 else
f0706e82 527 local->iff_promiscs++;
13262ffd 528 sdata->flags ^= IEEE80211_SDATA_PROMISC;
f0706e82
JB		 529 }
530 if (dev->mc_count != sdata->mc_count) {
531 local->mc_count = local->mc_count - sdata->mc_count +
532 dev->mc_count;
533 sdata->mc_count = dev->mc_count;
534 }
535 if (local->ops->set_multicast_list) {
536 flags = local->mdev->flags;
537 if (local->iff_allmultis)
538 flags |= IFF_ALLMULTI;
539 if (local->iff_promiscs)
540 flags |= IFF_PROMISC;
541 read_lock(&local->sub_if_lock);
542 local->ops->set_multicast_list(local_to_hw(local), flags,
543 local->mc_count);
544 read_unlock(&local->sub_if_lock);
545 }
546 netif_tx_unlock(local->mdev);
547}
548
b2c258fb
JB		 549/* Must not be called for mdev and apdev */
550void ieee80211_if_setup(struct net_device *dev)
f0706e82 551{
b2c258fb
JB		 552 ether_setup(dev);
553 dev->hard_start_xmit = ieee80211_subif_start_xmit;
554 dev->wireless_handlers = &ieee80211_iw_handler_def;
555 dev->set_multicast_list = ieee80211_set_multicast_list;
556 dev->change_mtu = ieee80211_change_mtu;
b2c258fb
JB		 557 dev->open = ieee80211_open;
558 dev->stop = ieee80211_stop;
559 dev->uninit = ieee80211_if_reinit;
560 dev->destructor = ieee80211_if_free;
561}
f0706e82 562
b2c258fb
JB		 563/* WDS specialties */
564
565int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
566{
567 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
568 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
569 struct sta_info *sta;
0795af57 570 DECLARE_MAC_BUF(mac);
b2c258fb
JB		 571
572 if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
573 return 0;
574
575 /* Create STA entry for the new peer */
576 sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
577 if (!sta)
578 return -ENOMEM;
579 sta_info_put(sta);
580
581 /* Remove STA entry for the old peer */
582 sta = sta_info_get(local, sdata->u.wds.remote_addr);
583 if (sta) {
be8755e1 584 sta_info_free(sta);
b2c258fb 585 sta_info_put(sta);
b2c258fb
JB		 586 } else {
587 printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
0795af57
JP		 588 "peer %s\n",
589 dev->name, print_mac(mac, sdata->u.wds.remote_addr));
b2c258fb
JB		 590 }
591
592 /* Update WDS link data */
593 memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
594
595 return 0;
f0706e82 596}
f0706e82 597
b2c258fb
JB		 598/* everything else */
599
b2c258fb
JB		 600static int __ieee80211_if_config(struct net_device *dev,
601 struct sk_buff *beacon,
602 struct ieee80211_tx_control *control)
603{
604 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
605 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
606 struct ieee80211_if_conf conf;
607 static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
608
609 if (!local->ops->config_interface || !netif_running(dev))
f0706e82 610 return 0;
f0706e82 611
b2c258fb 612 memset(&conf, 0, sizeof(conf));
4480f15c 613 conf.type = sdata->type;
b2c258fb
JB		 614 if (sdata->type == IEEE80211_IF_TYPE_STA ||
615 sdata->type == IEEE80211_IF_TYPE_IBSS) {
616 if (local->sta_scanning &&
617 local->scan_dev == dev)
618 conf.bssid = scan_bssid;
619 else
620 conf.bssid = sdata->u.sta.bssid;
621 conf.ssid = sdata->u.sta.ssid;
622 conf.ssid_len = sdata->u.sta.ssid_len;
623 conf.generic_elem = sdata->u.sta.extra_ie;
624 conf.generic_elem_len = sdata->u.sta.extra_ie_len;
625 } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
626 conf.ssid = sdata->u.ap.ssid;
627 conf.ssid_len = sdata->u.ap.ssid_len;
628 conf.generic_elem = sdata->u.ap.generic_elem;
629 conf.generic_elem_len = sdata->u.ap.generic_elem_len;
630 conf.beacon = beacon;
631 conf.beacon_control = control;
f0706e82 632 }
b2c258fb
JB		 633 return local->ops->config_interface(local_to_hw(local),
634 dev->ifindex, &conf);
f0706e82
JB		 635}
636
b2c258fb
JB		 637int ieee80211_if_config(struct net_device *dev)
638{
639 return __ieee80211_if_config(dev, NULL, NULL);
640}
f0706e82 641
b2c258fb 642int ieee80211_if_config_beacon(struct net_device *dev)
f0706e82 643{
f0706e82 644 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
b2c258fb
JB		 645 struct ieee80211_tx_control control;
646 struct sk_buff *skb;
f0706e82 647
b2c258fb 648 if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
f0706e82 649 return 0;
b2c258fb
JB		 650 skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
651 if (!skb)
652 return -ENOMEM;
653 return __ieee80211_if_config(dev, skb, &control);
654}
f0706e82 655
b2c258fb
JB		 656int ieee80211_hw_config(struct ieee80211_local *local)
657{
658 struct ieee80211_hw_mode *mode;
659 struct ieee80211_channel *chan;
660 int ret = 0;
f0706e82 661
b2c258fb
JB		 662 if (local->sta_scanning) {
663 chan = local->scan_channel;
664 mode = local->scan_hw_mode;
665 } else {
666 chan = local->oper_channel;
667 mode = local->oper_hw_mode;
f0706e82
JB		 668 }
669
b2c258fb
JB		 670 local->hw.conf.channel = chan->chan;
671 local->hw.conf.channel_val = chan->val;
61609bc0
MB		 672 if (!local->hw.conf.power_level) {
673 local->hw.conf.power_level = chan->power_level;
674 } else {
675 local->hw.conf.power_level = min(chan->power_level,
676 local->hw.conf.power_level);
677 }
b2c258fb
JB		 678 local->hw.conf.freq = chan->freq;
679 local->hw.conf.phymode = mode->mode;
680 local->hw.conf.antenna_max = chan->antenna_max;
681 local->hw.conf.chan = chan;
682 local->hw.conf.mode = mode;
f0706e82 683
b2c258fb
JB		 684#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
685 printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
686 "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
687 local->hw.conf.phymode);
688#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
689
690 if (local->ops->config)
691 ret = local->ops->config(local_to_hw(local), &local->hw.conf);
f0706e82 692
b2c258fb
JB		 693 return ret;
694}
f0706e82 695
d9430a32
DD		 696void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes)
697{
698 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
699 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
700 if (local->ops->erp_ie_changed)
701 local->ops->erp_ie_changed(local_to_hw(local), changes,
13262ffd
JS		 702 !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION),
703 !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE));
d9430a32
DD		 704}
705
706void ieee80211_reset_erp_info(struct net_device *dev)
707{
708 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
709
13262ffd
JS		 710 sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION |
711 IEEE80211_SDATA_SHORT_PREAMBLE);
d9430a32
DD		 712 ieee80211_erp_info_change_notify(dev,
713 IEEE80211_ERP_CHANGE_PROTECTION |
714 IEEE80211_ERP_CHANGE_PREAMBLE);
715}
716
b2c258fb
JB		 717struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
718 struct dev_mc_list *prev,
719 void **ptr)
f0706e82 720{
b2c258fb
JB		 721 struct ieee80211_local *local = hw_to_local(hw);
722 struct ieee80211_sub_if_data *sdata = *ptr;
723 struct dev_mc_list *mc;
724
725 if (!prev) {
726 WARN_ON(sdata);
727 sdata = NULL;
728 }
729 if (!prev || !prev->next) {
730 if (sdata)
731 sdata = list_entry(sdata->list.next,
732 struct ieee80211_sub_if_data, list);
733 else
734 sdata = list_entry(local->sub_if_list.next,
735 struct ieee80211_sub_if_data, list);
736 if (&sdata->list != &local->sub_if_list)
737 mc = sdata->dev->mc_list;
738 else
739 mc = NULL;
740 } else
741 mc = prev->next;
742
743 *ptr = sdata;
744 return mc;
f0706e82 745}
b2c258fb 746EXPORT_SYMBOL(ieee80211_get_mc_list_item);
f0706e82 747
f0706e82
JB		 748void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
749 struct sk_buff *skb,
750 struct ieee80211_tx_status *status)
751{
752 struct ieee80211_local *local = hw_to_local(hw);
753 struct ieee80211_tx_status *saved;
754 int tmp;
755
756 skb->dev = local->mdev;
757 saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
758 if (unlikely(!saved)) {
759 if (net_ratelimit())
760 printk(KERN_WARNING "%s: Not enough memory, "
761 "dropping tx status", skb->dev->name);
762 /* should be dev_kfree_skb_irq, but due to this function being
763 * named _irqsafe instead of just _irq we can't be sure that
764 * people won't call it from non-irq contexts */
765 dev_kfree_skb_any(skb);
766 return;
767 }
768 memcpy(saved, status, sizeof(struct ieee80211_tx_status));
769 /* copy pointer to saved status into skb->cb for use by tasklet */
770 memcpy(skb->cb, &saved, sizeof(saved));
771
772 skb->pkt_type = IEEE80211_TX_STATUS_MSG;
773 skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
774 &local->skb_queue : &local->skb_queue_unreliable, skb);
775 tmp = skb_queue_len(&local->skb_queue) +
776 skb_queue_len(&local->skb_queue_unreliable);
777 while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
778 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
779 memcpy(&saved, skb->cb, sizeof(saved));
780 kfree(saved);
781 dev_kfree_skb_irq(skb);
782 tmp--;
783 I802_DEBUG_INC(local->tx_status_drop);
784 }
785 tasklet_schedule(&local->tasklet);
786}
787EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
788
789static void ieee80211_tasklet_handler(unsigned long data)
790{
791 struct ieee80211_local *local = (struct ieee80211_local *) data;
792 struct sk_buff *skb;
793 struct ieee80211_rx_status rx_status;
794 struct ieee80211_tx_status *tx_status;
795
796 while ((skb = skb_dequeue(&local->skb_queue)) ||
797 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
798 switch (skb->pkt_type) {
799 case IEEE80211_RX_MSG:
800 /* status is in skb->cb */
801 memcpy(&rx_status, skb->cb, sizeof(rx_status));
802 /* Clear skb->type in order to not confuse kernel
803 * netstack. */
804 skb->pkt_type = 0;
805 __ieee80211_rx(local_to_hw(local), skb, &rx_status);
806 break;
807 case IEEE80211_TX_STATUS_MSG:
808 /* get pointer to saved status out of skb->cb */
809 memcpy(&tx_status, skb->cb, sizeof(tx_status));
810 skb->pkt_type = 0;
811 ieee80211_tx_status(local_to_hw(local),
812 skb, tx_status);
813 kfree(tx_status);
814 break;
815 default: /* should never get here! */
816 printk(KERN_ERR "%s: Unknown message type (%d)\n",
dd1cd4c6 817 wiphy_name(local->hw.wiphy), skb->pkt_type);
f0706e82
JB		 818 dev_kfree_skb(skb);
819 break;
820 }
821 }
822}
823
f0706e82
JB		 824/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
825 * make a prepared TX frame (one that has been given to hw) to look like brand
826 * new IEEE 802.11 frame that is ready to go through TX processing again.
827 * Also, tx_packet_data in cb is restored from tx_control. */
828static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
829 struct ieee80211_key *key,
830 struct sk_buff *skb,
831 struct ieee80211_tx_control *control)
832{
833 int hdrlen, iv_len, mic_len;
834 struct ieee80211_tx_packet_data *pkt_data;
835
836 pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
837 pkt_data->ifindex = control->ifindex;
e8bf9649
JS		 838 pkt_data->flags = 0;
839 if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS)
840 pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS;
841 if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)
842 pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
843 if (control->flags & IEEE80211_TXCTL_REQUEUE)
844 pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
845 if (control->type == IEEE80211_IF_TYPE_MGMT)
846 pkt_data->flags |= IEEE80211_TXPD_MGMT_IFACE;
f0706e82
JB		 847 pkt_data->queue = control->queue;
848
849 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
850
851 if (!key)
852 goto no_key;
853
8f20fc24 854 switch (key->conf.alg) {
f0706e82
JB		 855 case ALG_WEP:
856 iv_len = WEP_IV_LEN;
857 mic_len = WEP_ICV_LEN;
858 break;
859 case ALG_TKIP:
860 iv_len = TKIP_IV_LEN;
861 mic_len = TKIP_ICV_LEN;
862 break;
863 case ALG_CCMP:
864 iv_len = CCMP_HDR_LEN;
865 mic_len = CCMP_MIC_LEN;
866 break;
867 default:
868 goto no_key;
869 }
870
8f20fc24 871 if (skb->len >= mic_len &&
11a843b7 872 !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
f0706e82
JB		 873 skb_trim(skb, skb->len - mic_len);
874 if (skb->len >= iv_len && skb->len > hdrlen) {
875 memmove(skb->data + iv_len, skb->data, hdrlen);
876 skb_pull(skb, iv_len);
877 }
878
879no_key:
880 {
881 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
882 u16 fc = le16_to_cpu(hdr->frame_control);
883 if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
884 fc &= ~IEEE80211_STYPE_QOS_DATA;
885 hdr->frame_control = cpu_to_le16(fc);
886 memmove(skb->data + 2, skb->data, hdrlen - 2);
887 skb_pull(skb, 2);
888 }
889 }
890}
891
f0706e82
JB		 892void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
893 struct ieee80211_tx_status *status)
894{
895 struct sk_buff *skb2;
896 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
897 struct ieee80211_local *local = hw_to_local(hw);
898 u16 frag, type;
899 u32 msg_type;
b306f453
JB		 900 struct ieee80211_tx_status_rtap_hdr *rthdr;
901 struct ieee80211_sub_if_data *sdata;
902 int monitors;
f0706e82
JB		 903
904 if (!status) {
905 printk(KERN_ERR
906 "%s: ieee80211_tx_status called with NULL status\n",
dd1cd4c6 907 wiphy_name(local->hw.wiphy));
f0706e82
JB		 908 dev_kfree_skb(skb);
909 return;
910 }
911
912 if (status->excessive_retries) {
913 struct sta_info *sta;
914 sta = sta_info_get(local, hdr->addr1);
915 if (sta) {
916 if (sta->flags & WLAN_STA_PS) {
917 /* The STA is in power save mode, so assume
918 * that this TX packet failed because of that.
919 */
920 status->excessive_retries = 0;
921 status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
922 }
923 sta_info_put(sta);
924 }
925 }
926
927 if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
928 struct sta_info *sta;
929 sta = sta_info_get(local, hdr->addr1);
930 if (sta) {
931 sta->tx_filtered_count++;
932
933 /* Clear the TX filter mask for this STA when sending
934 * the next packet. If the STA went to power save mode,
935 * this will happen when it is waking up for the next
936 * time. */
937 sta->clear_dst_mask = 1;
938
939 /* TODO: Is the WLAN_STA_PS flag always set here or is
940 * the race between RX and TX status causing some
941 * packets to be filtered out before 80211.o gets an
942 * update for PS status? This seems to be the case, so
943 * no changes are likely to be needed. */
944 if (sta->flags & WLAN_STA_PS &&
945 skb_queue_len(&sta->tx_filtered) <
946 STA_MAX_TX_BUFFER) {
947 ieee80211_remove_tx_extra(local, sta->key,
948 skb,
949 &status->control);
950 skb_queue_tail(&sta->tx_filtered, skb);
951 } else if (!(sta->flags & WLAN_STA_PS) &&
952 !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
953 /* Software retry the packet once */
954 status->control.flags |= IEEE80211_TXCTL_REQUEUE;
955 ieee80211_remove_tx_extra(local, sta->key,
956 skb,
957 &status->control);
958 dev_queue_xmit(skb);
959 } else {
960 if (net_ratelimit()) {
961 printk(KERN_DEBUG "%s: dropped TX "
962 "filtered frame queue_len=%d "
963 "PS=%d @%lu\n",
dd1cd4c6 964 wiphy_name(local->hw.wiphy),
f0706e82
JB		 965 skb_queue_len(
966 &sta->tx_filtered),
967 !!(sta->flags & WLAN_STA_PS),
968 jiffies);
969 }
970 dev_kfree_skb(skb);
971 }
972 sta_info_put(sta);
973 return;
974 }
975 } else {
976 /* FIXME: STUPID to call this with both local and local->mdev */
977 rate_control_tx_status(local, local->mdev, skb, status);
978 }
979
980 ieee80211_led_tx(local, 0);
981
982 /* SNMP counters
983 * Fragments are passed to low-level drivers as separate skbs, so these
984 * are actually fragments, not frames. Update frame counters only for
985 * the first fragment of the frame. */
986
987 frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
988 type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
989
990 if (status->flags & IEEE80211_TX_STATUS_ACK) {
991 if (frag == 0) {
992 local->dot11TransmittedFrameCount++;
993 if (is_multicast_ether_addr(hdr->addr1))
994 local->dot11MulticastTransmittedFrameCount++;
995 if (status->retry_count > 0)
996 local->dot11RetryCount++;
997 if (status->retry_count > 1)
998 local->dot11MultipleRetryCount++;
999 }
1000
1001 /* This counter shall be incremented for an acknowledged MPDU
1002 * with an individual address in the address 1 field or an MPDU
1003 * with a multicast address in the address 1 field of type Data
1004 * or Management. */
1005 if (!is_multicast_ether_addr(hdr->addr1) ||
1006 type == IEEE80211_FTYPE_DATA ||
1007 type == IEEE80211_FTYPE_MGMT)
1008 local->dot11TransmittedFragmentCount++;
1009 } else {
1010 if (frag == 0)
1011 local->dot11FailedCount++;
1012 }
1013
b306f453
JB		 1014 msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ?
1015 ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail;
1016
1017 /* this was a transmitted frame, but now we want to reuse it */
1018 skb_orphan(skb);
1019
1020 if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) &&
1021 local->apdev) {
1022 if (local->monitors) {
1023 skb2 = skb_clone(skb, GFP_ATOMIC);
1024 } else {
1025 skb2 = skb;
1026 skb = NULL;
1027 }
1028
1029 if (skb2)
1030 /* Send frame to hostapd */
1031 ieee80211_rx_mgmt(local, skb2, NULL, msg_type);
1032
1033 if (!skb)
1034 return;
1035 }
1036
1037 if (!local->monitors) {
f0706e82
JB		 1038 dev_kfree_skb(skb);
1039 return;
1040 }
1041
b306f453 1042 /* send frame to monitor interfaces now */
f0706e82 1043
b306f453
JB		 1044 if (skb_headroom(skb) < sizeof(*rthdr)) {
1045 printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
f0706e82
JB		 1046 dev_kfree_skb(skb);
1047 return;
1048 }
f0706e82 1049
b306f453
JB		 1050 rthdr = (struct ieee80211_tx_status_rtap_hdr*)
1051 skb_push(skb, sizeof(*rthdr));
1052
1053 memset(rthdr, 0, sizeof(*rthdr));
1054 rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
1055 rthdr->hdr.it_present =
1056 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
1057 (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
1058
1059 if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
1060 !is_multicast_ether_addr(hdr->addr1))
1061 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
1062
1063 if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
1064 (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
1065 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
1066 else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
1067 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
1068
1069 rthdr->data_retries = status->retry_count;
1070
1071 read_lock(&local->sub_if_lock);
1072 monitors = local->monitors;
1073 list_for_each_entry(sdata, &local->sub_if_list, list) {
1074 /*
1075 * Using the monitors counter is possibly racy, but
1076 * if the value is wrong we simply either clone the skb
1077 * once too much or forget sending it to one monitor iface
1078 * The latter case isn't nice but fixing the race is much
1079 * more complicated.
1080 */
1081 if (!monitors || !skb)
1082 goto out;
1083
1084 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
1085 if (!netif_running(sdata->dev))
1086 continue;
1087 monitors--;
1088 if (monitors)
1089 skb2 = skb_clone(skb, GFP_KERNEL);
1090 else
1091 skb2 = NULL;
1092 skb->dev = sdata->dev;
1093 /* XXX: is this sufficient for BPF? */
1094 skb_set_mac_header(skb, 0);
1095 skb->ip_summed = CHECKSUM_UNNECESSARY;
1096 skb->pkt_type = PACKET_OTHERHOST;
1097 skb->protocol = htons(ETH_P_802_2);
1098 memset(skb->cb, 0, sizeof(skb->cb));
1099 netif_rx(skb);
1100 skb = skb2;
b306f453
JB		 1101 }
1102 }
1103 out:
1104 read_unlock(&local->sub_if_lock);
1105 if (skb)
1106 dev_kfree_skb(skb);
f0706e82
JB		 1107}
1108EXPORT_SYMBOL(ieee80211_tx_status);
1109
f0706e82
JB		 1110struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
1111 const struct ieee80211_ops *ops)
1112{
1113 struct net_device *mdev;
1114 struct ieee80211_local *local;
1115 struct ieee80211_sub_if_data *sdata;
1116 int priv_size;
1117 struct wiphy *wiphy;
1118
1119 /* Ensure 32-byte alignment of our private data and hw private data.
1120 * We use the wiphy priv data for both our ieee80211_local and for
1121 * the driver's private data
1122 *
1123 * In memory it'll be like this:
1124 *
1125 * +-------------------------+
1126 * | struct wiphy |
1127 * +-------------------------+
1128 * | struct ieee80211_local |
1129 * +-------------------------+
1130 * | driver's private data |
1131 * +-------------------------+
1132 *
1133 */
1134 priv_size = ((sizeof(struct ieee80211_local) +
1135 NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
1136 priv_data_len;
1137
1138 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
1139
1140 if (!wiphy)
1141 return NULL;
1142
1143 wiphy->privid = mac80211_wiphy_privid;
1144
1145 local = wiphy_priv(wiphy);
1146 local->hw.wiphy = wiphy;
1147
1148 local->hw.priv = (char *)local +
1149 ((sizeof(struct ieee80211_local) +
1150 NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
1151
4480f15c
JB		 1152 BUG_ON(!ops->tx);
1153 BUG_ON(!ops->config);
1154 BUG_ON(!ops->add_interface);
f0706e82
JB		 1155 local->ops = ops;
1156
1157 /* for now, mdev needs sub_if_data :/ */
1158 mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
1159 "wmaster%d", ether_setup);
1160 if (!mdev) {
1161 wiphy_free(wiphy);
1162 return NULL;
1163 }
1164
1165 sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
1166 mdev->ieee80211_ptr = &sdata->wdev;
1167 sdata->wdev.wiphy = wiphy;
1168
1169 local->hw.queues = 1; /* default */
1170
1171 local->mdev = mdev;
1172 local->rx_pre_handlers = ieee80211_rx_pre_handlers;
1173 local->rx_handlers = ieee80211_rx_handlers;
1174 local->tx_handlers = ieee80211_tx_handlers;
1175
1176 local->bridge_packets = 1;
1177
1178 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
1179 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
1180 local->short_retry_limit = 7;
1181 local->long_retry_limit = 4;
1182 local->hw.conf.radio_enabled = 1;
f0706e82 1183
b708e610 1184 local->enabled_modes = ~0;
f0706e82
JB		 1185
1186 INIT_LIST_HEAD(&local->modes_list);
1187
1188 rwlock_init(&local->sub_if_lock);
1189 INIT_LIST_HEAD(&local->sub_if_list);
1190
1191 INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
f0706e82
JB		 1192 ieee80211_rx_bss_list_init(mdev);
1193
1194 sta_info_init(local);
1195
1196 mdev->hard_start_xmit = ieee80211_master_start_xmit;
1197 mdev->open = ieee80211_master_open;
1198 mdev->stop = ieee80211_master_stop;
1199 mdev->type = ARPHRD_IEEE80211;
1200 mdev->hard_header_parse = header_parse_80211;
1201
1202 sdata->type = IEEE80211_IF_TYPE_AP;
1203 sdata->dev = mdev;
1204 sdata->local = local;
1205 sdata->u.ap.force_unicast_rateidx = -1;
1206 sdata->u.ap.max_ratectrl_rateidx = -1;
1207 ieee80211_if_sdata_init(sdata);
1208 list_add_tail(&sdata->list, &local->sub_if_list);
1209
1210 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
1211 (unsigned long)local);
1212 tasklet_disable(&local->tx_pending_tasklet);
1213
1214 tasklet_init(&local->tasklet,
1215 ieee80211_tasklet_handler,
1216 (unsigned long) local);
1217 tasklet_disable(&local->tasklet);
1218
1219 skb_queue_head_init(&local->skb_queue);
1220 skb_queue_head_init(&local->skb_queue_unreliable);
1221
1222 return local_to_hw(local);
1223}
1224EXPORT_SYMBOL(ieee80211_alloc_hw);
1225
1226int ieee80211_register_hw(struct ieee80211_hw *hw)
1227{
1228 struct ieee80211_local *local = hw_to_local(hw);
1229 const char *name;
1230 int result;
1231
1232 result = wiphy_register(local->hw.wiphy);
1233 if (result < 0)
1234 return result;
1235
1236 name = wiphy_dev(local->hw.wiphy)->driver->name;
1237 local->hw.workqueue = create_singlethread_workqueue(name);
1238 if (!local->hw.workqueue) {
1239 result = -ENOMEM;
1240 goto fail_workqueue;
1241 }
1242
b306f453
JB		 1243 /*
1244 * The hardware needs headroom for sending the frame,
1245 * and we need some headroom for passing the frame to monitor
1246 * interfaces, but never both at the same time.
1247 */
33ccad35
JB		 1248 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
1249 sizeof(struct ieee80211_tx_status_rtap_hdr));
b306f453 1250
e9f207f0
JB		 1251 debugfs_hw_add(local);
1252
f0706e82
JB		 1253 local->hw.conf.beacon_int = 1000;
1254
1255 local->wstats_flags |= local->hw.max_rssi ?
1256 IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
1257 local->wstats_flags |= local->hw.max_signal ?
1258 IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
1259 local->wstats_flags |= local->hw.max_noise ?
1260 IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
1261 if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
1262 local->wstats_flags |= IW_QUAL_DBM;
1263
1264 result = sta_info_start(local);
1265 if (result < 0)
1266 goto fail_sta_info;
1267
1268 rtnl_lock();
1269 result = dev_alloc_name(local->mdev, local->mdev->name);
1270 if (result < 0)
1271 goto fail_dev;
1272
1273 memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
1274 SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
1275
1276 result = register_netdevice(local->mdev);
1277 if (result < 0)
1278 goto fail_dev;
1279
e9f207f0
JB		 1280 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
1281
f0706e82
JB		 1282 result = ieee80211_init_rate_ctrl_alg(local, NULL);
1283 if (result < 0) {
1284 printk(KERN_DEBUG "%s: Failed to initialize rate control "
dd1cd4c6 1285 "algorithm\n", wiphy_name(local->hw.wiphy));
f0706e82
JB		 1286 goto fail_rate;
1287 }
1288
1289 result = ieee80211_wep_init(local);
1290
1291 if (result < 0) {
1292 printk(KERN_DEBUG "%s: Failed to initialize wep\n",
dd1cd4c6 1293 wiphy_name(local->hw.wiphy));
f0706e82
JB		 1294 goto fail_wep;
1295 }
1296
1297 ieee80211_install_qdisc(local->mdev);
1298
1299 /* add one default STA interface */
1300 result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
1301 IEEE80211_IF_TYPE_STA);
1302 if (result)
1303 printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
dd1cd4c6 1304 wiphy_name(local->hw.wiphy));
f0706e82
JB		 1305
1306 local->reg_state = IEEE80211_DEV_REGISTERED;
1307 rtnl_unlock();
1308
1309 ieee80211_led_init(local);
1310
1311 return 0;
1312
1313fail_wep:
1314 rate_control_deinitialize(local);
1315fail_rate:
e9f207f0 1316 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
f0706e82
JB		 1317 unregister_netdevice(local->mdev);
1318fail_dev:
1319 rtnl_unlock();
1320 sta_info_stop(local);
1321fail_sta_info:
e9f207f0 1322 debugfs_hw_del(local);
f0706e82
JB		 1323 destroy_workqueue(local->hw.workqueue);
1324fail_workqueue:
1325 wiphy_unregister(local->hw.wiphy);
1326 return result;
1327}
1328EXPORT_SYMBOL(ieee80211_register_hw);
1329
1330int ieee80211_register_hwmode(struct ieee80211_hw *hw,
1331 struct ieee80211_hw_mode *mode)
1332{
1333 struct ieee80211_local *local = hw_to_local(hw);
1334 struct ieee80211_rate *rate;
1335 int i;
1336
1337 INIT_LIST_HEAD(&mode->list);
1338 list_add_tail(&mode->list, &local->modes_list);
1339
1340 local->hw_modes |= (1 << mode->mode);
1341 for (i = 0; i < mode->num_rates; i++) {
1342 rate = &(mode->rates[i]);
1343 rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
1344 }
1345 ieee80211_prepare_rates(local, mode);
1346
1347 if (!local->oper_hw_mode) {
1348 /* Default to this mode */
1349 local->hw.conf.phymode = mode->mode;
1350 local->oper_hw_mode = local->scan_hw_mode = mode;
1351 local->oper_channel = local->scan_channel = &mode->channels[0];
1352 local->hw.conf.mode = local->oper_hw_mode;
1353 local->hw.conf.chan = local->oper_channel;
1354 }
1355
1356 if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED))
fd8bacc9 1357 ieee80211_set_default_regdomain(mode);
f0706e82
JB		 1358
1359 return 0;
1360}
1361EXPORT_SYMBOL(ieee80211_register_hwmode);
1362
1363void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1364{
1365 struct ieee80211_local *local = hw_to_local(hw);
1366 struct ieee80211_sub_if_data *sdata, *tmp;
1367 struct list_head tmp_list;
1368 int i;
1369
1370 tasklet_kill(&local->tx_pending_tasklet);
1371 tasklet_kill(&local->tasklet);
1372
1373 rtnl_lock();
1374
1375 BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
1376
1377 local->reg_state = IEEE80211_DEV_UNREGISTERED;
1378 if (local->apdev)
1379 ieee80211_if_del_mgmt(local);
1380
1381 write_lock_bh(&local->sub_if_lock);
1382 list_replace_init(&local->sub_if_list, &tmp_list);
1383 write_unlock_bh(&local->sub_if_lock);
1384
1385 list_for_each_entry_safe(sdata, tmp, &tmp_list, list)
1386 __ieee80211_if_del(local, sdata);
1387
1388 rtnl_unlock();
1389
f0706e82
JB		 1390 ieee80211_rx_bss_list_deinit(local->mdev);
1391 ieee80211_clear_tx_pending(local);
1392 sta_info_stop(local);
1393 rate_control_deinitialize(local);
e9f207f0 1394 debugfs_hw_del(local);
f0706e82
JB		 1395
1396 for (i = 0; i < NUM_IEEE80211_MODES; i++) {
1397 kfree(local->supp_rates[i]);
1398 kfree(local->basic_rates[i]);
1399 }
1400
1401 if (skb_queue_len(&local->skb_queue)
1402 || skb_queue_len(&local->skb_queue_unreliable))
1403 printk(KERN_WARNING "%s: skb_queue not empty\n",
dd1cd4c6 1404 wiphy_name(local->hw.wiphy));
f0706e82
JB		 1405 skb_queue_purge(&local->skb_queue);
1406 skb_queue_purge(&local->skb_queue_unreliable);
1407
1408 destroy_workqueue(local->hw.workqueue);
1409 wiphy_unregister(local->hw.wiphy);
1410 ieee80211_wep_free(local);
1411 ieee80211_led_exit(local);
1412}
1413EXPORT_SYMBOL(ieee80211_unregister_hw);
1414
1415void ieee80211_free_hw(struct ieee80211_hw *hw)
1416{
1417 struct ieee80211_local *local = hw_to_local(hw);
1418
1419 ieee80211_if_free(local->mdev);
1420 wiphy_free(local->hw.wiphy);
1421}
1422EXPORT_SYMBOL(ieee80211_free_hw);
1423
f0706e82
JB		 1424static int __init ieee80211_init(void)
1425{
1426 struct sk_buff *skb;
1427 int ret;
1428
1429 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
1430
1431 ret = ieee80211_wme_register();
1432 if (ret) {
1433 printk(KERN_DEBUG "ieee80211_init: failed to "
1434 "initialize WME (err=%d)\n", ret);
1435 return ret;
1436 }
1437
e9f207f0 1438 ieee80211_debugfs_netdev_init();
fd8bacc9 1439 ieee80211_regdomain_init();
e9f207f0 1440
f0706e82
JB		 1441 return 0;
1442}
1443
f0706e82
JB		 1444static void __exit ieee80211_exit(void)
1445{
1446 ieee80211_wme_unregister();
e9f207f0 1447 ieee80211_debugfs_netdev_exit();
f0706e82
JB		 1448}
1449
1450
ca9938fe 1451subsys_initcall(ieee80211_init);
f0706e82
JB		 1452module_exit(ieee80211_exit);
1453
1454MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1455MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)