blob: 3bf04d6d2b13479ca3112f2abf5450830a37f564 [file] [log] [blame]
Jeff Garzikb4538722005-05-12 22:48:20 -04001/*
2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
4 *
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * <jkmaline@cc.hut.fi>
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
James Ketrenosebeaddc2005-09-21 11:58:43 -05008 * Copyright (c) 2004-2005, Intel Corporation
Jeff Garzikb4538722005-05-12 22:48:20 -04009 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. See README and COPYING for
13 * more details.
14 */
15
16#include <linux/compiler.h>
17#include <linux/config.h>
18#include <linux/errno.h>
19#include <linux/if_arp.h>
20#include <linux/in6.h>
21#include <linux/in.h>
22#include <linux/ip.h>
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/netdevice.h>
Jeff Garzikb4538722005-05-12 22:48:20 -040026#include <linux/proc_fs.h>
27#include <linux/skbuff.h>
28#include <linux/slab.h>
29#include <linux/tcp.h>
30#include <linux/types.h>
31#include <linux/version.h>
32#include <linux/wireless.h>
33#include <linux/etherdevice.h>
34#include <asm/uaccess.h>
35#include <linux/ctype.h>
36
37#include <net/ieee80211.h>
38
39static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
40 struct sk_buff *skb,
41 struct ieee80211_rx_stats *rx_stats)
42{
43 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
44 u16 fc = le16_to_cpu(hdr->frame_ctl);
45
46 skb->dev = ieee->dev;
47 skb->mac.raw = skb->data;
48 skb_pull(skb, ieee80211_get_hdrlen(fc));
49 skb->pkt_type = PACKET_OTHERHOST;
50 skb->protocol = __constant_htons(ETH_P_80211_RAW);
51 memset(skb->cb, 0, sizeof(skb->cb));
52 netif_rx(skb);
53}
54
Jeff Garzikb4538722005-05-12 22:48:20 -040055/* Called only as a tasklet (software IRQ) */
Jeff Garzik0edd5b42005-09-07 00:48:31 -040056static struct ieee80211_frag_entry *ieee80211_frag_cache_find(struct
57 ieee80211_device
58 *ieee,
59 unsigned int seq,
60 unsigned int frag,
61 u8 * src,
62 u8 * dst)
Jeff Garzikb4538722005-05-12 22:48:20 -040063{
64 struct ieee80211_frag_entry *entry;
65 int i;
66
67 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
68 entry = &ieee->frag_cache[i];
69 if (entry->skb != NULL &&
70 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
Jeff Garzik0edd5b42005-09-07 00:48:31 -040071 IEEE80211_DEBUG_FRAG("expiring fragment cache entry "
72 "seq=%u last_frag=%u\n",
73 entry->seq, entry->last_frag);
Jeff Garzikb4538722005-05-12 22:48:20 -040074 dev_kfree_skb_any(entry->skb);
75 entry->skb = NULL;
76 }
77
78 if (entry->skb != NULL && entry->seq == seq &&
79 (entry->last_frag + 1 == frag || frag == -1) &&
80 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
81 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
82 return entry;
83 }
84
85 return NULL;
86}
87
88/* Called only as a tasklet (software IRQ) */
Jeff Garzik0edd5b42005-09-07 00:48:31 -040089static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee,
James Ketrenosee34af32005-09-21 11:54:36 -050090 struct ieee80211_hdr_4addr *hdr)
Jeff Garzikb4538722005-05-12 22:48:20 -040091{
92 struct sk_buff *skb = NULL;
93 u16 sc;
94 unsigned int frag, seq;
95 struct ieee80211_frag_entry *entry;
96
97 sc = le16_to_cpu(hdr->seq_ctl);
98 frag = WLAN_GET_SEQ_FRAG(sc);
99 seq = WLAN_GET_SEQ_SEQ(sc);
100
101 if (frag == 0) {
102 /* Reserve enough space to fit maximum frame length */
103 skb = dev_alloc_skb(ieee->dev->mtu +
James Ketrenosee34af32005-09-21 11:54:36 -0500104 sizeof(struct ieee80211_hdr_4addr) +
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400105 8 /* LLC */ +
106 2 /* alignment */ +
107 8 /* WEP */ + ETH_ALEN /* WDS */ );
Jeff Garzikb4538722005-05-12 22:48:20 -0400108 if (skb == NULL)
109 return NULL;
110
111 entry = &ieee->frag_cache[ieee->frag_next_idx];
112 ieee->frag_next_idx++;
113 if (ieee->frag_next_idx >= IEEE80211_FRAG_CACHE_LEN)
114 ieee->frag_next_idx = 0;
115
116 if (entry->skb != NULL)
117 dev_kfree_skb_any(entry->skb);
118
119 entry->first_frag_time = jiffies;
120 entry->seq = seq;
121 entry->last_frag = frag;
122 entry->skb = skb;
123 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
124 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
125 } else {
126 /* received a fragment of a frame for which the head fragment
127 * should have already been received */
128 entry = ieee80211_frag_cache_find(ieee, seq, frag, hdr->addr2,
129 hdr->addr1);
130 if (entry != NULL) {
131 entry->last_frag = frag;
132 skb = entry->skb;
133 }
134 }
135
136 return skb;
137}
138
Jeff Garzikb4538722005-05-12 22:48:20 -0400139/* Called only as a tasklet (software IRQ) */
140static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
James Ketrenosee34af32005-09-21 11:54:36 -0500141 struct ieee80211_hdr_4addr *hdr)
Jeff Garzikb4538722005-05-12 22:48:20 -0400142{
143 u16 sc;
144 unsigned int seq;
145 struct ieee80211_frag_entry *entry;
146
147 sc = le16_to_cpu(hdr->seq_ctl);
148 seq = WLAN_GET_SEQ_SEQ(sc);
149
150 entry = ieee80211_frag_cache_find(ieee, seq, -1, hdr->addr2,
151 hdr->addr1);
152
153 if (entry == NULL) {
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400154 IEEE80211_DEBUG_FRAG("could not invalidate fragment cache "
155 "entry (seq=%u)\n", seq);
Jeff Garzikb4538722005-05-12 22:48:20 -0400156 return -1;
157 }
158
159 entry->skb = NULL;
160 return 0;
161}
162
Jeff Garzikb4538722005-05-12 22:48:20 -0400163#ifdef NOT_YET
164/* ieee80211_rx_frame_mgtmt
165 *
166 * Responsible for handling management control frames
167 *
168 * Called by ieee80211_rx */
169static inline int
170ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
171 struct ieee80211_rx_stats *rx_stats, u16 type,
172 u16 stype)
173{
174 if (ieee->iw_mode == IW_MODE_MASTER) {
175 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
176 ieee->dev->name);
177 return 0;
178/*
James Ketrenosee34af32005-09-21 11:54:36 -0500179 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
Jeff Garzikb4538722005-05-12 22:48:20 -0400180 skb->data);*/
181 }
182
183 if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) {
184 if (stype == WLAN_FC_STYPE_BEACON &&
185 ieee->iw_mode == IW_MODE_MASTER) {
186 struct sk_buff *skb2;
187 /* Process beacon frames also in kernel driver to
188 * update STA(AP) table statistics */
189 skb2 = skb_clone(skb, GFP_ATOMIC);
190 if (skb2)
191 hostap_rx(skb2->dev, skb2, rx_stats);
192 }
193
194 /* send management frames to the user space daemon for
195 * processing */
196 ieee->apdevstats.rx_packets++;
197 ieee->apdevstats.rx_bytes += skb->len;
198 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
199 return 0;
200 }
201
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400202 if (ieee->iw_mode == IW_MODE_MASTER) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400203 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
204 printk(KERN_DEBUG "%s: unknown management frame "
205 "(type=0x%02x, stype=0x%02x) dropped\n",
206 skb->dev->name, type, stype);
207 return -1;
208 }
209
210 hostap_rx(skb->dev, skb, rx_stats);
211 return 0;
212 }
213
214 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
215 "received in non-Host AP mode\n", skb->dev->name);
216 return -1;
217}
218#endif
219
Jeff Garzikb4538722005-05-12 22:48:20 -0400220/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
221/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400222static unsigned char rfc1042_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
223
Jeff Garzikb4538722005-05-12 22:48:20 -0400224/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
225static unsigned char bridge_tunnel_header[] =
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400226 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
Jeff Garzikb4538722005-05-12 22:48:20 -0400227/* No encapsulation header if EtherType < 0x600 (=length) */
228
229/* Called by ieee80211_rx_frame_decrypt */
230static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
231 struct sk_buff *skb)
232{
233 struct net_device *dev = ieee->dev;
234 u16 fc, ethertype;
James Ketrenosee34af32005-09-21 11:54:36 -0500235 struct ieee80211_hdr_3addr *hdr;
Jeff Garzikb4538722005-05-12 22:48:20 -0400236 u8 *pos;
237
238 if (skb->len < 24)
239 return 0;
240
James Ketrenosee34af32005-09-21 11:54:36 -0500241 hdr = (struct ieee80211_hdr_3addr *)skb->data;
Jeff Garzikb4538722005-05-12 22:48:20 -0400242 fc = le16_to_cpu(hdr->frame_ctl);
243
244 /* check that the frame is unicast frame to us */
245 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
246 IEEE80211_FCTL_TODS &&
247 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
248 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
249 /* ToDS frame with own addr BSSID and DA */
250 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
251 IEEE80211_FCTL_FROMDS &&
252 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
253 /* FromDS frame with own addr as DA */
254 } else
255 return 0;
256
257 if (skb->len < 24 + 8)
258 return 0;
259
260 /* check for port access entity Ethernet type */
261 pos = skb->data + 24;
262 ethertype = (pos[6] << 8) | pos[7];
263 if (ethertype == ETH_P_PAE)
264 return 1;
265
266 return 0;
267}
268
269/* Called only as a tasklet (software IRQ), by ieee80211_rx */
270static inline int
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400271ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
Jeff Garzikb4538722005-05-12 22:48:20 -0400272 struct ieee80211_crypt_data *crypt)
273{
James Ketrenosee34af32005-09-21 11:54:36 -0500274 struct ieee80211_hdr_3addr *hdr;
Jeff Garzikb4538722005-05-12 22:48:20 -0400275 int res, hdrlen;
276
277 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
278 return 0;
279
James Ketrenosee34af32005-09-21 11:54:36 -0500280 hdr = (struct ieee80211_hdr_3addr *)skb->data;
Jeff Garzikb4538722005-05-12 22:48:20 -0400281 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
282
Jeff Garzikb4538722005-05-12 22:48:20 -0400283 atomic_inc(&crypt->refcnt);
284 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
285 atomic_dec(&crypt->refcnt);
286 if (res < 0) {
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400287 IEEE80211_DEBUG_DROP("decryption failed (SA=" MAC_FMT
288 ") res=%d\n", MAC_ARG(hdr->addr2), res);
Jeff Garzikb4538722005-05-12 22:48:20 -0400289 if (res == -2)
290 IEEE80211_DEBUG_DROP("Decryption failed ICV "
291 "mismatch (key %d)\n",
292 skb->data[hdrlen + 3] >> 6);
293 ieee->ieee_stats.rx_discards_undecryptable++;
294 return -1;
295 }
296
297 return res;
298}
299
Jeff Garzikb4538722005-05-12 22:48:20 -0400300/* Called only as a tasklet (software IRQ), by ieee80211_rx */
301static inline int
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400302ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee,
303 struct sk_buff *skb, int keyidx,
304 struct ieee80211_crypt_data *crypt)
Jeff Garzikb4538722005-05-12 22:48:20 -0400305{
James Ketrenosee34af32005-09-21 11:54:36 -0500306 struct ieee80211_hdr_3addr *hdr;
Jeff Garzikb4538722005-05-12 22:48:20 -0400307 int res, hdrlen;
308
309 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
310 return 0;
311
James Ketrenosee34af32005-09-21 11:54:36 -0500312 hdr = (struct ieee80211_hdr_3addr *)skb->data;
Jeff Garzikb4538722005-05-12 22:48:20 -0400313 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
314
315 atomic_inc(&crypt->refcnt);
316 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
317 atomic_dec(&crypt->refcnt);
318 if (res < 0) {
319 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
320 " (SA=" MAC_FMT " keyidx=%d)\n",
321 ieee->dev->name, MAC_ARG(hdr->addr2), keyidx);
322 return -1;
323 }
324
325 return 0;
326}
327
Jeff Garzikb4538722005-05-12 22:48:20 -0400328/* All received frames are sent to this function. @skb contains the frame in
329 * IEEE 802.11 format, i.e., in the format it was sent over air.
330 * This function is called only as a tasklet (software IRQ). */
331int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
332 struct ieee80211_rx_stats *rx_stats)
333{
334 struct net_device *dev = ieee->dev;
James Ketrenosee34af32005-09-21 11:54:36 -0500335 struct ieee80211_hdr_4addr *hdr;
Jeff Garzikb4538722005-05-12 22:48:20 -0400336 size_t hdrlen;
337 u16 fc, type, stype, sc;
338 struct net_device_stats *stats;
339 unsigned int frag;
340 u8 *payload;
341 u16 ethertype;
342#ifdef NOT_YET
343 struct net_device *wds = NULL;
344 struct sk_buff *skb2 = NULL;
345 struct net_device *wds = NULL;
346 int frame_authorized = 0;
347 int from_assoc_ap = 0;
348 void *sta = NULL;
349#endif
350 u8 dst[ETH_ALEN];
351 u8 src[ETH_ALEN];
352 struct ieee80211_crypt_data *crypt = NULL;
353 int keyidx = 0;
354
James Ketrenosee34af32005-09-21 11:54:36 -0500355 hdr = (struct ieee80211_hdr_4addr *)skb->data;
Jeff Garzikb4538722005-05-12 22:48:20 -0400356 stats = &ieee->stats;
357
358 if (skb->len < 10) {
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400359 printk(KERN_INFO "%s: SKB length < 10\n", dev->name);
Jeff Garzikb4538722005-05-12 22:48:20 -0400360 goto rx_dropped;
361 }
362
363 fc = le16_to_cpu(hdr->frame_ctl);
364 type = WLAN_FC_GET_TYPE(fc);
365 stype = WLAN_FC_GET_STYPE(fc);
366 sc = le16_to_cpu(hdr->seq_ctl);
367 frag = WLAN_GET_SEQ_FRAG(sc);
368 hdrlen = ieee80211_get_hdrlen(fc);
369
Jeff Garzikb4538722005-05-12 22:48:20 -0400370 /* Put this code here so that we avoid duplicating it in all
371 * Rx paths. - Jean II */
372#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
373 /* If spy monitoring on */
James Ketrenos74079fd2005-09-13 17:35:21 -0500374 if (ieee->spy_data.spy_number > 0) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400375 struct iw_quality wstats;
James Ketrenos74079fd2005-09-13 17:35:21 -0500376
377 wstats.updated = 0;
378 if (rx_stats->mask & IEEE80211_STATMASK_RSSI) {
379 wstats.level = rx_stats->rssi;
380 wstats.updated |= IW_QUAL_LEVEL_UPDATED;
381 } else
382 wstats.updated |= IW_QUAL_LEVEL_INVALID;
383
384 if (rx_stats->mask & IEEE80211_STATMASK_NOISE) {
385 wstats.noise = rx_stats->noise;
386 wstats.updated |= IW_QUAL_NOISE_UPDATED;
387 } else
388 wstats.updated |= IW_QUAL_NOISE_INVALID;
389
390 if (rx_stats->mask & IEEE80211_STATMASK_SIGNAL) {
391 wstats.qual = rx_stats->signal;
392 wstats.updated |= IW_QUAL_QUAL_UPDATED;
393 } else
394 wstats.updated |= IW_QUAL_QUAL_INVALID;
395
Jeff Garzikb4538722005-05-12 22:48:20 -0400396 /* Update spy records */
James Ketrenos74079fd2005-09-13 17:35:21 -0500397 wireless_spy_update(ieee->dev, hdr->addr2, &wstats);
Jeff Garzikb4538722005-05-12 22:48:20 -0400398 }
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400399#endif /* IW_WIRELESS_SPY */
James Ketrenos74079fd2005-09-13 17:35:21 -0500400
401#ifdef NOT_YET
Jeff Garzikb4538722005-05-12 22:48:20 -0400402 hostap_update_rx_stats(local->ap, hdr, rx_stats);
403#endif
404
Jeff Garzikb4538722005-05-12 22:48:20 -0400405 if (ieee->iw_mode == IW_MODE_MONITOR) {
406 ieee80211_monitor_rx(ieee, skb, rx_stats);
407 stats->rx_packets++;
408 stats->rx_bytes += skb->len;
409 return 1;
410 }
Jeff Garzikb4538722005-05-12 22:48:20 -0400411
James Ketrenosccd0fda2005-09-21 11:58:32 -0500412 if (is_multicast_ether_addr(hdr->addr1) ? ieee->host_mc_decrypt :
413 ieee->host_decrypt) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400414 int idx = 0;
415 if (skb->len >= hdrlen + 3)
416 idx = skb->data[hdrlen + 3] >> 6;
417 crypt = ieee->crypt[idx];
418#ifdef NOT_YET
419 sta = NULL;
420
421 /* Use station specific key to override default keys if the
422 * receiver address is a unicast address ("individual RA"). If
423 * bcrx_sta_key parameter is set, station specific key is used
424 * even with broad/multicast targets (this is against IEEE
425 * 802.11, but makes it easier to use different keys with
426 * stations that do not support WEP key mapping). */
427
428 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400429 (void)hostap_handle_sta_crypto(local, hdr, &crypt,
430 &sta);
Jeff Garzikb4538722005-05-12 22:48:20 -0400431#endif
432
433 /* allow NULL decrypt to indicate an station specific override
434 * for default encryption */
435 if (crypt && (crypt->ops == NULL ||
436 crypt->ops->decrypt_mpdu == NULL))
437 crypt = NULL;
438
Jiri Bencf13baae2005-08-25 20:11:46 -0400439 if (!crypt && (fc & IEEE80211_FCTL_PROTECTED)) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400440 /* This seems to be triggered by some (multicast?)
441 * frames from other than current BSS, so just drop the
442 * frames silently instead of filling system log with
443 * these reports. */
444 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
445 " (SA=" MAC_FMT ")\n",
446 MAC_ARG(hdr->addr2));
447 ieee->ieee_stats.rx_discards_undecryptable++;
448 goto rx_dropped;
449 }
450 }
Jeff Garzikb4538722005-05-12 22:48:20 -0400451#ifdef NOT_YET
452 if (type != WLAN_FC_TYPE_DATA) {
453 if (type == WLAN_FC_TYPE_MGMT && stype == WLAN_FC_STYPE_AUTH &&
Jiri Bencf13baae2005-08-25 20:11:46 -0400454 fc & IEEE80211_FCTL_PROTECTED && ieee->host_decrypt &&
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400455 (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400456 printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
457 "from " MAC_FMT "\n", dev->name,
458 MAC_ARG(hdr->addr2));
459 /* TODO: could inform hostapd about this so that it
460 * could send auth failure report */
461 goto rx_dropped;
462 }
463
464 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
465 goto rx_dropped;
466 else
467 goto rx_exit;
468 }
469#endif
470
471 /* Data frame - extract src/dst addresses */
Jiri Benc286d9742005-05-24 15:10:18 +0200472 if (skb->len < IEEE80211_3ADDR_LEN)
Jeff Garzikb4538722005-05-12 22:48:20 -0400473 goto rx_dropped;
474
475 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
476 case IEEE80211_FCTL_FROMDS:
477 memcpy(dst, hdr->addr1, ETH_ALEN);
478 memcpy(src, hdr->addr3, ETH_ALEN);
479 break;
480 case IEEE80211_FCTL_TODS:
481 memcpy(dst, hdr->addr3, ETH_ALEN);
482 memcpy(src, hdr->addr2, ETH_ALEN);
483 break;
484 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
Jiri Benc286d9742005-05-24 15:10:18 +0200485 if (skb->len < IEEE80211_4ADDR_LEN)
Jeff Garzikb4538722005-05-12 22:48:20 -0400486 goto rx_dropped;
487 memcpy(dst, hdr->addr3, ETH_ALEN);
488 memcpy(src, hdr->addr4, ETH_ALEN);
489 break;
490 case 0:
491 memcpy(dst, hdr->addr1, ETH_ALEN);
492 memcpy(src, hdr->addr2, ETH_ALEN);
493 break;
494 }
495
496#ifdef NOT_YET
497 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
498 goto rx_dropped;
499 if (wds) {
500 skb->dev = dev = wds;
501 stats = hostap_get_stats(dev);
502 }
503
504 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400505 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
506 IEEE80211_FCTL_FROMDS && ieee->stadev
507 && memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400508 /* Frame from BSSID of the AP for which we are a client */
509 skb->dev = dev = ieee->stadev;
510 stats = hostap_get_stats(dev);
511 from_assoc_ap = 1;
512 }
513#endif
514
515 dev->last_rx = jiffies;
516
517#ifdef NOT_YET
518 if ((ieee->iw_mode == IW_MODE_MASTER ||
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400519 ieee->iw_mode == IW_MODE_REPEAT) && !from_assoc_ap) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400520 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
521 wds != NULL)) {
522 case AP_RX_CONTINUE_NOT_AUTHORIZED:
523 frame_authorized = 0;
524 break;
525 case AP_RX_CONTINUE:
526 frame_authorized = 1;
527 break;
528 case AP_RX_DROP:
529 goto rx_dropped;
530 case AP_RX_EXIT:
531 goto rx_exit;
532 }
533 }
534#endif
535
536 /* Nullfunc frames may have PS-bit set, so they must be passed to
537 * hostap_handle_sta_rx() before being dropped here. */
James Ketrenos9e8571a2005-09-21 11:56:33 -0500538
539 stype &= ~IEEE80211_STYPE_QOS_DATA;
540
Jeff Garzikb4538722005-05-12 22:48:20 -0400541 if (stype != IEEE80211_STYPE_DATA &&
542 stype != IEEE80211_STYPE_DATA_CFACK &&
543 stype != IEEE80211_STYPE_DATA_CFPOLL &&
544 stype != IEEE80211_STYPE_DATA_CFACKPOLL) {
545 if (stype != IEEE80211_STYPE_NULLFUNC)
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400546 IEEE80211_DEBUG_DROP("RX: dropped data frame "
547 "with no data (type=0x%02x, "
548 "subtype=0x%02x, len=%d)\n",
549 type, stype, skb->len);
Jeff Garzikb4538722005-05-12 22:48:20 -0400550 goto rx_dropped;
551 }
552
553 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
554
Jiri Bencf13baae2005-08-25 20:11:46 -0400555 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
Jeff Garzikb4538722005-05-12 22:48:20 -0400556 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
557 goto rx_dropped;
558
James Ketrenosee34af32005-09-21 11:54:36 -0500559 hdr = (struct ieee80211_hdr_4addr *)skb->data;
Jeff Garzikb4538722005-05-12 22:48:20 -0400560
561 /* skb: hdr + (possibly fragmented) plaintext payload */
562 // PR: FIXME: hostap has additional conditions in the "if" below:
Jiri Bencf13baae2005-08-25 20:11:46 -0400563 // ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
Jeff Garzikb4538722005-05-12 22:48:20 -0400564 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
565 int flen;
566 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
567 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
568
569 if (!frag_skb) {
570 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
571 "Rx cannot get skb from fragment "
572 "cache (morefrag=%d seq=%u frag=%u)\n",
573 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
574 WLAN_GET_SEQ_SEQ(sc), frag);
575 goto rx_dropped;
576 }
577
578 flen = skb->len;
579 if (frag != 0)
580 flen -= hdrlen;
581
582 if (frag_skb->tail + flen > frag_skb->end) {
583 printk(KERN_WARNING "%s: host decrypted and "
584 "reassembled frame did not fit skb\n",
585 dev->name);
586 ieee80211_frag_cache_invalidate(ieee, hdr);
587 goto rx_dropped;
588 }
589
590 if (frag == 0) {
591 /* copy first fragment (including full headers) into
592 * beginning of the fragment cache skb */
593 memcpy(skb_put(frag_skb, flen), skb->data, flen);
594 } else {
595 /* append frame payload to the end of the fragment
596 * cache skb */
597 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
598 flen);
599 }
600 dev_kfree_skb_any(skb);
601 skb = NULL;
602
603 if (fc & IEEE80211_FCTL_MOREFRAGS) {
604 /* more fragments expected - leave the skb in fragment
605 * cache for now; it will be delivered to upper layers
606 * after all fragments have been received */
607 goto rx_exit;
608 }
609
610 /* this was the last fragment and the frame will be
611 * delivered, so remove skb from fragment cache */
612 skb = frag_skb;
James Ketrenosee34af32005-09-21 11:54:36 -0500613 hdr = (struct ieee80211_hdr_4addr *)skb->data;
Jeff Garzikb4538722005-05-12 22:48:20 -0400614 ieee80211_frag_cache_invalidate(ieee, hdr);
615 }
616
617 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
618 * encrypted/authenticated */
Jiri Bencf13baae2005-08-25 20:11:46 -0400619 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
Jeff Garzikb4538722005-05-12 22:48:20 -0400620 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
621 goto rx_dropped;
622
James Ketrenosee34af32005-09-21 11:54:36 -0500623 hdr = (struct ieee80211_hdr_4addr *)skb->data;
Jiri Bencf13baae2005-08-25 20:11:46 -0400624 if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) {
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400625 if ( /*ieee->ieee802_1x && */
626 ieee80211_is_eapol_frame(ieee, skb)) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400627 /* pass unencrypted EAPOL frames even if encryption is
628 * configured */
Jeff Garzikb4538722005-05-12 22:48:20 -0400629 } else {
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400630 IEEE80211_DEBUG_DROP("encryption configured, but RX "
631 "frame not encrypted (SA=" MAC_FMT
632 ")\n", MAC_ARG(hdr->addr2));
Jeff Garzikb4538722005-05-12 22:48:20 -0400633 goto rx_dropped;
634 }
635 }
636
Jiri Bencf13baae2005-08-25 20:11:46 -0400637 if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep &&
Jeff Garzikb4538722005-05-12 22:48:20 -0400638 !ieee80211_is_eapol_frame(ieee, skb)) {
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400639 IEEE80211_DEBUG_DROP("dropped unencrypted RX data "
640 "frame from " MAC_FMT
641 " (drop_unencrypted=1)\n",
642 MAC_ARG(hdr->addr2));
Jeff Garzikb4538722005-05-12 22:48:20 -0400643 goto rx_dropped;
644 }
645
646 /* skb: hdr + (possible reassembled) full plaintext payload */
647
648 payload = skb->data + hdrlen;
649 ethertype = (payload[6] << 8) | payload[7];
650
651#ifdef NOT_YET
652 /* If IEEE 802.1X is used, check whether the port is authorized to send
653 * the received frame. */
654 if (ieee->ieee802_1x && ieee->iw_mode == IW_MODE_MASTER) {
655 if (ethertype == ETH_P_PAE) {
656 printk(KERN_DEBUG "%s: RX: IEEE 802.1X frame\n",
657 dev->name);
658 if (ieee->hostapd && ieee->apdev) {
659 /* Send IEEE 802.1X frames to the user
660 * space daemon for processing */
661 prism2_rx_80211(ieee->apdev, skb, rx_stats,
662 PRISM2_RX_MGMT);
663 ieee->apdevstats.rx_packets++;
664 ieee->apdevstats.rx_bytes += skb->len;
665 goto rx_exit;
666 }
667 } else if (!frame_authorized) {
668 printk(KERN_DEBUG "%s: dropped frame from "
669 "unauthorized port (IEEE 802.1X): "
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400670 "ethertype=0x%04x\n", dev->name, ethertype);
Jeff Garzikb4538722005-05-12 22:48:20 -0400671 goto rx_dropped;
672 }
673 }
674#endif
675
676 /* convert hdr + possible LLC headers into Ethernet header */
677 if (skb->len - hdrlen >= 8 &&
678 ((memcmp(payload, rfc1042_header, SNAP_SIZE) == 0 &&
679 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
680 memcmp(payload, bridge_tunnel_header, SNAP_SIZE) == 0)) {
681 /* remove RFC1042 or Bridge-Tunnel encapsulation and
682 * replace EtherType */
683 skb_pull(skb, hdrlen + SNAP_SIZE);
684 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
685 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
686 } else {
687 u16 len;
688 /* Leave Ethernet header part of hdr and full payload */
689 skb_pull(skb, hdrlen);
690 len = htons(skb->len);
691 memcpy(skb_push(skb, 2), &len, 2);
692 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
693 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
694 }
695
696#ifdef NOT_YET
697 if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400698 IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400699 /* Non-standard frame: get addr4 from its bogus location after
700 * the payload */
701 memcpy(skb->data + ETH_ALEN,
702 skb->data + skb->len - ETH_ALEN, ETH_ALEN);
703 skb_trim(skb, skb->len - ETH_ALEN);
704 }
705#endif
706
707 stats->rx_packets++;
708 stats->rx_bytes += skb->len;
709
710#ifdef NOT_YET
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400711 if (ieee->iw_mode == IW_MODE_MASTER && !wds && ieee->ap->bridge_packets) {
Jeff Garzikb4538722005-05-12 22:48:20 -0400712 if (dst[0] & 0x01) {
713 /* copy multicast frame both to the higher layers and
714 * to the wireless media */
715 ieee->ap->bridged_multicast++;
716 skb2 = skb_clone(skb, GFP_ATOMIC);
717 if (skb2 == NULL)
718 printk(KERN_DEBUG "%s: skb_clone failed for "
719 "multicast frame\n", dev->name);
720 } else if (hostap_is_sta_assoc(ieee->ap, dst)) {
721 /* send frame directly to the associated STA using
722 * wireless media and not passing to higher layers */
723 ieee->ap->bridged_unicast++;
724 skb2 = skb;
725 skb = NULL;
726 }
727 }
728
729 if (skb2 != NULL) {
730 /* send to wireless media */
731 skb2->protocol = __constant_htons(ETH_P_802_3);
732 skb2->mac.raw = skb2->nh.raw = skb2->data;
733 /* skb2->nh.raw = skb2->data + ETH_HLEN; */
734 skb2->dev = dev;
735 dev_queue_xmit(skb2);
736 }
Jeff Garzikb4538722005-05-12 22:48:20 -0400737#endif
738
739 if (skb) {
740 skb->protocol = eth_type_trans(skb, dev);
741 memset(skb->cb, 0, sizeof(skb->cb));
742 skb->dev = dev;
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400743 skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
Jeff Garzikb4538722005-05-12 22:48:20 -0400744 netif_rx(skb);
745 }
746
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400747 rx_exit:
Jeff Garzikb4538722005-05-12 22:48:20 -0400748#ifdef NOT_YET
749 if (sta)
750 hostap_handle_sta_release(sta);
751#endif
752 return 1;
753
Jeff Garzik0edd5b42005-09-07 00:48:31 -0400754 rx_dropped:
Jeff Garzikb4538722005-05-12 22:48:20 -0400755 stats->rx_dropped++;
756
757 /* Returning 0 indicates to caller that we have not handled the SKB--
758 * so it is still allocated and can be used again by underlying
759 * hardware as a DMA target */
760 return 0;
761}
762
763#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
764
James Ketrenos9e8571a2005-09-21 11:56:33 -0500765static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
766
767/*
768* Make ther structure we read from the beacon packet has
769* the right values
770*/
771static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
772 *info_element, int sub_type)
773{
774
775 if (info_element->qui_subtype != sub_type)
776 return -1;
777 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
778 return -1;
779 if (info_element->qui_type != QOS_OUI_TYPE)
780 return -1;
781 if (info_element->version != QOS_VERSION_1)
782 return -1;
783
784 return 0;
785}
786
787/*
788 * Parse a QoS parameter element
789 */
790static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
791 *element_param, struct ieee80211_info_element
792 *info_element)
793{
794 int ret = 0;
795 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
796
797 if ((info_element == NULL) || (element_param == NULL))
798 return -1;
799
800 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
801 memcpy(element_param->info_element.qui, info_element->data,
802 info_element->len);
803 element_param->info_element.elementID = info_element->id;
804 element_param->info_element.length = info_element->len;
805 } else
806 ret = -1;
807 if (ret == 0)
808 ret = ieee80211_verify_qos_info(&element_param->info_element,
809 QOS_OUI_PARAM_SUB_TYPE);
810 return ret;
811}
812
813/*
814 * Parse a QoS information element
815 */
816static int ieee80211_read_qos_info_element(struct
817 ieee80211_qos_information_element
818 *element_info, struct ieee80211_info_element
819 *info_element)
820{
821 int ret = 0;
822 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
823
824 if (element_info == NULL)
825 return -1;
826 if (info_element == NULL)
827 return -1;
828
829 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
830 memcpy(element_info->qui, info_element->data,
831 info_element->len);
832 element_info->elementID = info_element->id;
833 element_info->length = info_element->len;
834 } else
835 ret = -1;
836
837 if (ret == 0)
838 ret = ieee80211_verify_qos_info(element_info,
839 QOS_OUI_INFO_SUB_TYPE);
840 return ret;
841}
842
843/*
844 * Write QoS parameters from the ac parameters.
845 */
846static int ieee80211_qos_convert_ac_to_parameters(struct
847 ieee80211_qos_parameter_info
848 *param_elm, struct
849 ieee80211_qos_parameters
850 *qos_param)
851{
852 int rc = 0;
853 int i;
854 struct ieee80211_qos_ac_parameter *ac_params;
855 u32 txop;
856 u8 cw_min;
857 u8 cw_max;
858
859 for (i = 0; i < QOS_QUEUE_NUM; i++) {
860 ac_params = &(param_elm->ac_params_record[i]);
861
862 qos_param->aifs[i] = (ac_params->aci_aifsn) & 0x0F;
863 qos_param->aifs[i] -= (qos_param->aifs[i] < 2) ? 0 : 2;
864
865 cw_min = ac_params->ecw_min_max & 0x0F;
866 qos_param->cw_min[i] = (u16) ((1 << cw_min) - 1);
867
868 cw_max = (ac_params->ecw_min_max & 0xF0) >> 4;
869 qos_param->cw_max[i] = (u16) ((1 << cw_max) - 1);
870
871 qos_param->flag[i] =
872 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
873
874 txop = le16_to_cpu(ac_params->tx_op_limit) * 32;
875 qos_param->tx_op_limit[i] = (u16) txop;
876 }
877 return rc;
878}
879
880/*
881 * we have a generic data element which it may contain QoS information or
882 * parameters element. check the information element length to decide
883 * which type to read
884 */
885static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
886 *info_element,
887 struct ieee80211_network *network)
888{
889 int rc = 0;
890 struct ieee80211_qos_parameters *qos_param = NULL;
891 struct ieee80211_qos_information_element qos_info_element;
892
893 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
894
895 if (rc == 0) {
896 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
897 network->flags |= NETWORK_HAS_QOS_INFORMATION;
898 } else {
899 struct ieee80211_qos_parameter_info param_element;
900
901 rc = ieee80211_read_qos_param_element(&param_element,
902 info_element);
903 if (rc == 0) {
904 qos_param = &(network->qos_data.parameters);
905 ieee80211_qos_convert_ac_to_parameters(&param_element,
906 qos_param);
907 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
908 network->qos_data.param_count =
909 param_element.info_element.ac_info & 0x0F;
910 }
911 }
912
913 if (rc == 0) {
914 IEEE80211_DEBUG_QOS("QoS is supported\n");
915 network->qos_data.supported = 1;
916 }
917 return rc;
918}
919
Ivo van Doornff9e00f2005-10-03 10:19:25 -0500920static int ieee80211_parse_info_param(struct ieee80211_info_element *info_element,
921 u16 length, struct ieee80211_network *network)
James Ketrenos9e8571a2005-09-21 11:56:33 -0500922{
Ivo van Doornff9e00f2005-10-03 10:19:25 -0500923 u8 i;
924#ifdef CONFIG_IEEE80211_DEBUG
925 char rates_str[64];
926 char *p;
927#endif
James Ketrenos9e8571a2005-09-21 11:56:33 -0500928
Ivo van Doornff9e00f2005-10-03 10:19:25 -0500929 while (length >= sizeof(*info_element)) {
930 if (sizeof(*info_element) + info_element->len > length) {
931 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
James Ketrenos9e8571a2005-09-21 11:56:33 -0500932 "info_element->len + 2 > left : "
933 "info_element->len+2=%zd left=%d, id=%d.\n",
934 info_element->len +
Ivo van Doornff9e00f2005-10-03 10:19:25 -0500935 sizeof(*info_element),
936 length, info_element->id);
James Ketrenos9e8571a2005-09-21 11:56:33 -0500937 return 1;
938 }
939
940 switch (info_element->id) {
941 case MFIE_TYPE_SSID:
942 if (ieee80211_is_empty_essid(info_element->data,
943 info_element->len)) {
944 network->flags |= NETWORK_EMPTY_ESSID;
945 break;
946 }
947
948 network->ssid_len = min(info_element->len,
949 (u8) IW_ESSID_MAX_SIZE);
950 memcpy(network->ssid, info_element->data,
951 network->ssid_len);
952 if (network->ssid_len < IW_ESSID_MAX_SIZE)
953 memset(network->ssid + network->ssid_len, 0,
954 IW_ESSID_MAX_SIZE - network->ssid_len);
955
Ivo van Doornff9e00f2005-10-03 10:19:25 -0500956 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
James Ketrenos9e8571a2005-09-21 11:56:33 -0500957 network->ssid, network->ssid_len);
958 break;
959
Ivo van Doornff9e00f2005-10-03 10:19:25 -0500960 case MFIE_TYPE_RATES:
961#ifdef CONFIG_IEEE80211_DEBUG
962 p = rates_str;
963#endif
964 network->rates_len = min(info_element->len,
965 MAX_RATES_LENGTH);
966 for (i = 0; i < network->rates_len; i++) {
967 network->rates[i] = info_element->data[i];
968#ifdef CONFIG_IEEE80211_DEBUG
969 p += snprintf(p, sizeof(rates_str) -
970 (p - rates_str), "%02X ",
971 network->rates[i]);
972#endif
973 if (ieee80211_is_ofdm_rate
974 (info_element->data[i])) {
975 network->flags |= NETWORK_HAS_OFDM;
976 if (info_element->data[i] &
977 IEEE80211_BASIC_RATE_MASK)
978 network->flags &=
979 ~NETWORK_HAS_CCK;
980 }
981 }
982
983 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
984 rates_str, network->rates_len);
985 break;
986
987 case MFIE_TYPE_RATES_EX:
988#ifdef CONFIG_IEEE80211_DEBUG
989 p = rates_str;
990#endif
991 network->rates_ex_len = min(info_element->len,
992 MAX_RATES_EX_LENGTH);
993 for (i = 0; i < network->rates_ex_len; i++) {
994 network->rates_ex[i] = info_element->data[i];
995#ifdef CONFIG_IEEE80211_DEBUG
996 p += snprintf(p, sizeof(rates_str) -
997 (p - rates_str), "%02X ",
998 network->rates[i]);
999#endif
1000 if (ieee80211_is_ofdm_rate
1001 (info_element->data[i])) {
1002 network->flags |= NETWORK_HAS_OFDM;
1003 if (info_element->data[i] &
1004 IEEE80211_BASIC_RATE_MASK)
1005 network->flags &=
1006 ~NETWORK_HAS_CCK;
1007 }
1008 }
1009
1010 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1011 rates_str, network->rates_ex_len);
1012 break;
1013
1014 case MFIE_TYPE_DS_SET:
1015 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1016 info_element->data[0]);
1017 network->channel = info_element->data[0];
1018 break;
1019
1020 case MFIE_TYPE_FH_SET:
1021 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1022 break;
1023
1024 case MFIE_TYPE_CF_SET:
1025 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1026 break;
1027
James Ketrenos9e8571a2005-09-21 11:56:33 -05001028 case MFIE_TYPE_TIM:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001029 IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: ignored\n");
1030 break;
1031
1032 case MFIE_TYPE_ERP_INFO:
1033 network->erp_value = info_element->data[0];
1034 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1035 network->erp_value);
James Ketrenos9e8571a2005-09-21 11:56:33 -05001036 break;
1037
1038 case MFIE_TYPE_IBSS_SET:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001039 network->atim_window = info_element->data[0];
1040 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1041 network->atim_window);
James Ketrenos9e8571a2005-09-21 11:56:33 -05001042 break;
1043
1044 case MFIE_TYPE_CHALLENGE:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001045 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
James Ketrenos9e8571a2005-09-21 11:56:33 -05001046 break;
1047
1048 case MFIE_TYPE_GENERIC:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001049 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1050 info_element->len);
1051 if (!ieee80211_parse_qos_info_param_IE(info_element,
1052 network))
1053 break;
1054
1055 if (info_element->len >= 4 &&
1056 info_element->data[0] == 0x00 &&
1057 info_element->data[1] == 0x50 &&
1058 info_element->data[2] == 0xf2 &&
1059 info_element->data[3] == 0x01) {
1060 network->wpa_ie_len = min(info_element->len + 2,
1061 MAX_WPA_IE_LEN);
1062 memcpy(network->wpa_ie, info_element,
1063 network->wpa_ie_len);
1064 }
James Ketrenos9e8571a2005-09-21 11:56:33 -05001065 break;
1066
1067 case MFIE_TYPE_RSN:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001068 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1069 info_element->len);
1070 network->rsn_ie_len = min(info_element->len + 2,
1071 MAX_WPA_IE_LEN);
1072 memcpy(network->rsn_ie, info_element,
1073 network->rsn_ie_len);
James Ketrenos9e8571a2005-09-21 11:56:33 -05001074 break;
1075
1076 case MFIE_TYPE_QOS_PARAMETER:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001077 printk(KERN_ERR "QoS Error need to parse QOS_PARAMETER IE\n");
James Ketrenos9e8571a2005-09-21 11:56:33 -05001078 break;
1079
1080 default:
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001081 IEEE80211_DEBUG_MGMT("unsupported IE %d\n",
James Ketrenos9e8571a2005-09-21 11:56:33 -05001082 info_element->id);
1083 break;
1084 }
1085
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001086 length -= sizeof(*info_element) + info_element->len;
1087 info_element = (struct ieee80211_info_element *) &info_element->data[info_element->len];
James Ketrenos9e8571a2005-09-21 11:56:33 -05001088 }
1089
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001090 return 0;
1091}
1092
1093static int ieee80211_handle_assoc_resp(struct ieee80211_device *ieee, struct ieee80211_assoc_response
1094 *frame, struct ieee80211_rx_stats *stats)
1095{
1096 struct ieee80211_network network_resp;
1097 struct ieee80211_network *network = &network_resp;
1098 struct net_device *dev = ieee->dev;
1099
1100 network->flags = 0;
1101 network->qos_data.active = 0;
1102 network->qos_data.supported = 0;
1103 network->qos_data.param_count = 0;
1104 network->qos_data.old_param_count = 0;
1105
1106 //network->atim_window = le16_to_cpu(frame->aid) & (0x3FFF);
1107 network->atim_window = le16_to_cpu(frame->aid);
1108 network->listen_interval = le16_to_cpu(frame->status);
1109
1110 if(ieee80211_parse_info_param(frame->info_element, stats->len - sizeof(*frame), network))
1111 return 1;
1112
James Ketrenos9e8571a2005-09-21 11:56:33 -05001113 if (ieee->handle_assoc_response != NULL)
1114 ieee->handle_assoc_response(dev, frame, network);
1115
1116 return 0;
1117}
1118
1119/***************************************************/
1120
James Ketrenos74079fd2005-09-13 17:35:21 -05001121static inline int ieee80211_network_init(struct ieee80211_device *ieee, struct ieee80211_probe_response
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001122 *beacon,
1123 struct ieee80211_network *network,
1124 struct ieee80211_rx_stats *stats)
Jeff Garzikb4538722005-05-12 22:48:20 -04001125{
James Ketrenos9e8571a2005-09-21 11:56:33 -05001126 network->qos_data.active = 0;
1127 network->qos_data.supported = 0;
1128 network->qos_data.param_count = 0;
Jeff Garzikb4538722005-05-12 22:48:20 -04001129
1130 /* Pull out fixed field data */
1131 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
James Ketrenosfd278172005-09-13 17:25:51 -05001132 network->capability = le16_to_cpu(beacon->capability);
Jeff Garzikb4538722005-05-12 22:48:20 -04001133 network->last_scanned = jiffies;
James Ketrenosfd278172005-09-13 17:25:51 -05001134 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
1135 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
1136 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001137 /* Where to pull this? beacon->listen_interval; */
Jeff Garzikb4538722005-05-12 22:48:20 -04001138 network->listen_interval = 0x0A;
1139 network->rates_len = network->rates_ex_len = 0;
1140 network->last_associate = 0;
1141 network->ssid_len = 0;
1142 network->flags = 0;
1143 network->atim_window = 0;
James Ketrenos42c94e42005-09-21 11:58:29 -05001144 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
James Ketrenosccd0fda2005-09-21 11:58:32 -05001145 0x3 : 0x0;
Jeff Garzikb4538722005-05-12 22:48:20 -04001146
1147 if (stats->freq == IEEE80211_52GHZ_BAND) {
1148 /* for A band (No DS info) */
1149 network->channel = stats->received_channel;
1150 } else
1151 network->flags |= NETWORK_HAS_CCK;
1152
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001153 network->wpa_ie_len = 0;
1154 network->rsn_ie_len = 0;
Jeff Garzikb4538722005-05-12 22:48:20 -04001155
Ivo van Doornff9e00f2005-10-03 10:19:25 -05001156 if(ieee80211_parse_info_param(beacon->info_element, stats->len - sizeof(*beacon), network))
1157 return 1;
Jeff Garzikb4538722005-05-12 22:48:20 -04001158
1159 network->mode = 0;
1160 if (stats->freq == IEEE80211_52GHZ_BAND)
1161 network->mode = IEEE_A;
1162 else {
1163 if (network->flags & NETWORK_HAS_OFDM)
1164 network->mode |= IEEE_G;
1165 if (network->flags & NETWORK_HAS_CCK)
1166 network->mode |= IEEE_B;
1167 }
1168
1169 if (network->mode == 0) {
1170 IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' "
1171 "network.\n",
1172 escape_essid(network->ssid,
1173 network->ssid_len),
1174 MAC_ARG(network->bssid));
1175 return 1;
1176 }
1177
1178 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
1179 network->flags |= NETWORK_EMPTY_ESSID;
1180
1181 memcpy(&network->stats, stats, sizeof(network->stats));
1182
1183 return 0;
1184}
1185
1186static inline int is_same_network(struct ieee80211_network *src,
1187 struct ieee80211_network *dst)
1188{
1189 /* A network is only a duplicate if the channel, BSSID, and ESSID
1190 * all match. We treat all <hidden> with the same BSSID and channel
1191 * as one network */
1192 return ((src->ssid_len == dst->ssid_len) &&
1193 (src->channel == dst->channel) &&
1194 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
1195 !memcmp(src->ssid, dst->ssid, src->ssid_len));
1196}
1197
1198static inline void update_network(struct ieee80211_network *dst,
1199 struct ieee80211_network *src)
1200{
James Ketrenos9e8571a2005-09-21 11:56:33 -05001201 int qos_active;
1202 u8 old_param;
1203
Jeff Garzikb4538722005-05-12 22:48:20 -04001204 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
1205 dst->capability = src->capability;
1206 memcpy(dst->rates, src->rates, src->rates_len);
1207 dst->rates_len = src->rates_len;
1208 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
1209 dst->rates_ex_len = src->rates_ex_len;
1210
1211 dst->mode = src->mode;
1212 dst->flags = src->flags;
1213 dst->time_stamp[0] = src->time_stamp[0];
1214 dst->time_stamp[1] = src->time_stamp[1];
1215
1216 dst->beacon_interval = src->beacon_interval;
1217 dst->listen_interval = src->listen_interval;
1218 dst->atim_window = src->atim_window;
James Ketrenos42c94e42005-09-21 11:58:29 -05001219 dst->erp_value = src->erp_value;
Jeff Garzikb4538722005-05-12 22:48:20 -04001220
1221 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
1222 dst->wpa_ie_len = src->wpa_ie_len;
1223 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
1224 dst->rsn_ie_len = src->rsn_ie_len;
1225
1226 dst->last_scanned = jiffies;
James Ketrenos9e8571a2005-09-21 11:56:33 -05001227 qos_active = src->qos_data.active;
1228 old_param = dst->qos_data.old_param_count;
1229 if (dst->flags & NETWORK_HAS_QOS_MASK)
1230 memcpy(&dst->qos_data, &src->qos_data,
1231 sizeof(struct ieee80211_qos_data));
1232 else {
1233 dst->qos_data.supported = src->qos_data.supported;
1234 dst->qos_data.param_count = src->qos_data.param_count;
1235 }
1236
1237 if (dst->qos_data.supported == 1) {
1238 if (dst->ssid_len)
1239 IEEE80211_DEBUG_QOS
1240 ("QoS the network %s is QoS supported\n",
1241 dst->ssid);
1242 else
1243 IEEE80211_DEBUG_QOS
1244 ("QoS the network is QoS supported\n");
1245 }
1246 dst->qos_data.active = qos_active;
1247 dst->qos_data.old_param_count = old_param;
1248
Jeff Garzikb4538722005-05-12 22:48:20 -04001249 /* dst->last_associate is not overwritten */
1250}
1251
James Ketrenos3f552bb2005-09-21 11:54:47 -05001252static inline int is_beacon(int fc)
1253{
1254 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
1255}
1256
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001257static inline void ieee80211_process_probe_response(struct ieee80211_device
James Ketrenos74079fd2005-09-13 17:35:21 -05001258 *ieee, struct
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001259 ieee80211_probe_response
James Ketrenos74079fd2005-09-13 17:35:21 -05001260 *beacon, struct ieee80211_rx_stats
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001261 *stats)
Jeff Garzikb4538722005-05-12 22:48:20 -04001262{
James Ketrenos3f552bb2005-09-21 11:54:47 -05001263 struct net_device *dev = ieee->dev;
Jeff Garzikb4538722005-05-12 22:48:20 -04001264 struct ieee80211_network network;
1265 struct ieee80211_network *target;
1266 struct ieee80211_network *oldest = NULL;
1267#ifdef CONFIG_IEEE80211_DEBUG
James Ketrenos68e4e032005-09-13 17:37:22 -05001268 struct ieee80211_info_element *info_element = beacon->info_element;
Jeff Garzikb4538722005-05-12 22:48:20 -04001269#endif
1270 unsigned long flags;
1271
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001272 IEEE80211_DEBUG_SCAN("'%s' (" MAC_FMT
1273 "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
1274 escape_essid(info_element->data,
1275 info_element->len),
1276 MAC_ARG(beacon->header.addr3),
1277 (beacon->capability & (1 << 0xf)) ? '1' : '0',
1278 (beacon->capability & (1 << 0xe)) ? '1' : '0',
1279 (beacon->capability & (1 << 0xd)) ? '1' : '0',
1280 (beacon->capability & (1 << 0xc)) ? '1' : '0',
1281 (beacon->capability & (1 << 0xb)) ? '1' : '0',
1282 (beacon->capability & (1 << 0xa)) ? '1' : '0',
1283 (beacon->capability & (1 << 0x9)) ? '1' : '0',
1284 (beacon->capability & (1 << 0x8)) ? '1' : '0',
1285 (beacon->capability & (1 << 0x7)) ? '1' : '0',
1286 (beacon->capability & (1 << 0x6)) ? '1' : '0',
1287 (beacon->capability & (1 << 0x5)) ? '1' : '0',
1288 (beacon->capability & (1 << 0x4)) ? '1' : '0',
1289 (beacon->capability & (1 << 0x3)) ? '1' : '0',
1290 (beacon->capability & (1 << 0x2)) ? '1' : '0',
1291 (beacon->capability & (1 << 0x1)) ? '1' : '0',
1292 (beacon->capability & (1 << 0x0)) ? '1' : '0');
Jeff Garzikb4538722005-05-12 22:48:20 -04001293
1294 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
1295 IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n",
1296 escape_essid(info_element->data,
1297 info_element->len),
1298 MAC_ARG(beacon->header.addr3),
James Ketrenos3f552bb2005-09-21 11:54:47 -05001299 is_beacon(le16_to_cpu
1300 (beacon->header.
1301 frame_ctl)) ?
1302 "BEACON" : "PROBE RESPONSE");
Jeff Garzikb4538722005-05-12 22:48:20 -04001303 return;
1304 }
1305
1306 /* The network parsed correctly -- so now we scan our known networks
1307 * to see if we can find it in our list.
1308 *
1309 * NOTE: This search is definitely not optimized. Once its doing
1310 * the "right thing" we'll optimize it for efficiency if
1311 * necessary */
1312
1313 /* Search for this entry in the list and update it if it is
1314 * already there. */
1315
1316 spin_lock_irqsave(&ieee->lock, flags);
1317
1318 list_for_each_entry(target, &ieee->network_list, list) {
1319 if (is_same_network(target, &network))
1320 break;
1321
1322 if ((oldest == NULL) ||
1323 (target->last_scanned < oldest->last_scanned))
1324 oldest = target;
1325 }
1326
1327 /* If we didn't find a match, then get a new network slot to initialize
1328 * with this beacon's information */
1329 if (&target->list == &ieee->network_list) {
1330 if (list_empty(&ieee->network_free_list)) {
1331 /* If there are no more slots, expire the oldest */
1332 list_del(&oldest->list);
1333 target = oldest;
1334 IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from "
1335 "network list.\n",
1336 escape_essid(target->ssid,
1337 target->ssid_len),
1338 MAC_ARG(target->bssid));
1339 } else {
1340 /* Otherwise just pull from the free list */
1341 target = list_entry(ieee->network_free_list.next,
1342 struct ieee80211_network, list);
1343 list_del(ieee->network_free_list.next);
1344 }
1345
Jeff Garzikb4538722005-05-12 22:48:20 -04001346#ifdef CONFIG_IEEE80211_DEBUG
1347 IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n",
1348 escape_essid(network.ssid,
1349 network.ssid_len),
1350 MAC_ARG(network.bssid),
James Ketrenos3f552bb2005-09-21 11:54:47 -05001351 is_beacon(le16_to_cpu
1352 (beacon->header.
1353 frame_ctl)) ?
1354 "BEACON" : "PROBE RESPONSE");
Jeff Garzikb4538722005-05-12 22:48:20 -04001355#endif
1356 memcpy(target, &network, sizeof(*target));
1357 list_add_tail(&target->list, &ieee->network_list);
1358 } else {
1359 IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n",
1360 escape_essid(target->ssid,
1361 target->ssid_len),
1362 MAC_ARG(target->bssid),
James Ketrenos3f552bb2005-09-21 11:54:47 -05001363 is_beacon(le16_to_cpu
1364 (beacon->header.
1365 frame_ctl)) ?
1366 "BEACON" : "PROBE RESPONSE");
Jeff Garzikb4538722005-05-12 22:48:20 -04001367 update_network(target, &network);
1368 }
1369
1370 spin_unlock_irqrestore(&ieee->lock, flags);
James Ketrenos3f552bb2005-09-21 11:54:47 -05001371
1372 if (is_beacon(le16_to_cpu(beacon->header.frame_ctl))) {
1373 if (ieee->handle_beacon != NULL)
1374 ieee->handle_beacon(dev, beacon, &network);
1375 } else {
1376 if (ieee->handle_probe_response != NULL)
1377 ieee->handle_probe_response(dev, beacon, &network);
1378 }
Jeff Garzikb4538722005-05-12 22:48:20 -04001379}
1380
1381void ieee80211_rx_mgt(struct ieee80211_device *ieee,
James Ketrenosee34af32005-09-21 11:54:36 -05001382 struct ieee80211_hdr_4addr *header,
Jeff Garzikb4538722005-05-12 22:48:20 -04001383 struct ieee80211_rx_stats *stats)
1384{
James Ketrenosfd278172005-09-13 17:25:51 -05001385 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
Jeff Garzikb4538722005-05-12 22:48:20 -04001386 case IEEE80211_STYPE_ASSOC_RESP:
1387 IEEE80211_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n",
James Ketrenosfd278172005-09-13 17:25:51 -05001388 WLAN_FC_GET_STYPE(le16_to_cpu
1389 (header->frame_ctl)));
James Ketrenos9e8571a2005-09-21 11:56:33 -05001390 ieee80211_handle_assoc_resp(ieee,
1391 (struct ieee80211_assoc_response *)
1392 header, stats);
Jeff Garzikb4538722005-05-12 22:48:20 -04001393 break;
1394
1395 case IEEE80211_STYPE_REASSOC_RESP:
1396 IEEE80211_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n",
James Ketrenosfd278172005-09-13 17:25:51 -05001397 WLAN_FC_GET_STYPE(le16_to_cpu
1398 (header->frame_ctl)));
Jeff Garzikb4538722005-05-12 22:48:20 -04001399 break;
1400
James Ketrenos42c94e42005-09-21 11:58:29 -05001401 case IEEE80211_STYPE_PROBE_REQ:
1402 IEEE80211_DEBUG_MGMT("recieved auth (%d)\n",
1403 WLAN_FC_GET_STYPE(le16_to_cpu
1404 (header->frame_ctl)));
1405
1406 if (ieee->handle_probe_request != NULL)
1407 ieee->handle_probe_request(ieee->dev,
1408 (struct
1409 ieee80211_probe_request *)
1410 header, stats);
1411 break;
1412
Jeff Garzikb4538722005-05-12 22:48:20 -04001413 case IEEE80211_STYPE_PROBE_RESP:
1414 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
James Ketrenosfd278172005-09-13 17:25:51 -05001415 WLAN_FC_GET_STYPE(le16_to_cpu
1416 (header->frame_ctl)));
Jeff Garzikb4538722005-05-12 22:48:20 -04001417 IEEE80211_DEBUG_SCAN("Probe response\n");
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001418 ieee80211_process_probe_response(ieee,
1419 (struct
1420 ieee80211_probe_response *)
1421 header, stats);
Jeff Garzikb4538722005-05-12 22:48:20 -04001422 break;
1423
1424 case IEEE80211_STYPE_BEACON:
1425 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
James Ketrenosfd278172005-09-13 17:25:51 -05001426 WLAN_FC_GET_STYPE(le16_to_cpu
1427 (header->frame_ctl)));
Jeff Garzikb4538722005-05-12 22:48:20 -04001428 IEEE80211_DEBUG_SCAN("Beacon\n");
Jeff Garzik0edd5b42005-09-07 00:48:31 -04001429 ieee80211_process_probe_response(ieee,
1430 (struct
1431 ieee80211_probe_response *)
1432 header, stats);
Jeff Garzikb4538722005-05-12 22:48:20 -04001433 break;
James Ketrenos3f552bb2005-09-21 11:54:47 -05001434 case IEEE80211_STYPE_AUTH:
1435
1436 IEEE80211_DEBUG_MGMT("recieved auth (%d)\n",
1437 WLAN_FC_GET_STYPE(le16_to_cpu
1438 (header->frame_ctl)));
1439
1440 if (ieee->handle_auth != NULL)
1441 ieee->handle_auth(ieee->dev,
1442 (struct ieee80211_auth *)header);
1443 break;
1444
1445 case IEEE80211_STYPE_DISASSOC:
1446 if (ieee->handle_disassoc != NULL)
1447 ieee->handle_disassoc(ieee->dev,
1448 (struct ieee80211_disassoc *)
1449 header);
1450 break;
Jeff Garzikb4538722005-05-12 22:48:20 -04001451
James Ketrenos31b59ea2005-09-21 11:58:49 -05001452 case IEEE80211_STYPE_DEAUTH:
1453 printk("DEAUTH from AP\n");
1454 if (ieee->handle_deauth != NULL)
1455 ieee->handle_deauth(ieee->dev, (struct ieee80211_auth *)
1456 header);
1457 break;
Jeff Garzikb4538722005-05-12 22:48:20 -04001458 default:
1459 IEEE80211_DEBUG_MGMT("received UNKNOWN (%d)\n",
James Ketrenosfd278172005-09-13 17:25:51 -05001460 WLAN_FC_GET_STYPE(le16_to_cpu
1461 (header->frame_ctl)));
Jeff Garzikb4538722005-05-12 22:48:20 -04001462 IEEE80211_WARNING("%s: Unknown management packet: %d\n",
1463 ieee->dev->name,
James Ketrenosfd278172005-09-13 17:25:51 -05001464 WLAN_FC_GET_STYPE(le16_to_cpu
1465 (header->frame_ctl)));
Jeff Garzikb4538722005-05-12 22:48:20 -04001466 break;
1467 }
1468}
1469
Jeff Garzikb4538722005-05-12 22:48:20 -04001470EXPORT_SYMBOL(ieee80211_rx_mgt);
1471EXPORT_SYMBOL(ieee80211_rx);